Lord Kṛṣṇa is especially glorified for giving pleasure to the gopīs and the queens of Dvārakā. Śukadeva Gosvāmī glorifies Lord Kṛṣṇa for His enchanting smile, by which He enchanted not only the gopīs of Vṛndāvana but also the queens of Dvārakā. The exact words used in this connection are vardhayan kāma-devam. In Vṛndāvana, as the boyfriend of many gopīs, and inDvārakā, as the husband of many queens, Kṛṣṇa increased their lusty desires to enjoy with Him. For God realization or self-realization, one generally has to undergo severe austerities and penances for many, many thousands of years, and then it may be possible to realize God. But the gopīs and the queens of Dvārakā, simply by enhancing their lusty desires to enjoy Kṛṣṇa as their boyfriend or husband, received the highest type of salvation.
(Krsna Book).

No one can properly describe the fortune of the wives of Lord Kṛṣṇa. They took care of Him personally by rendering various transcendental services like bathing Him, feeding Him, pleasing Him and serving Him. Thus no one's austerities can compare to the service of the queens at Dvārakā.
Śukadeva Gosvāmī informed Mahārāja Parīkṣit that for self-realization the austerities and penances performed by the queens at Dvārakā have no comparison. The objective of self-realization is one: Kṛṣṇa. Therefore, although the dealings of the queens with Kṛṣṇa appear just like ordinary dealings between husband and wife, the principal point to be observed is the queens' attachment for Kṛṣṇa. The entire process of austerity and penance is meant to detach one from the material world and enhance one's attachment to Kṛṣṇa, the Supreme Personality of Godhead. Kṛṣṇa is the shelter of all persons advancing in self-realization. As an ideal householder, He lived with His wives and performed the Vedic rituals just to show less intelligent persons that the Supreme Lord is never impersonal. Kṛṣṇa lived with wives and children in all opulence, exactly like an ordinary conditioned soul, just to teach those souls who are actually conditioned that they must enter into the family circle of Kṛṣṇa, where He is the center. For example, the members of the Yadu dynasty lived in the family of Kṛṣṇa, and Kṛṣṇa was the center of all their activities.
(Krsna Book).

All the wives of Lord Kṛṣṇa were completely absorbed in thought of Him. Kṛṣṇa is known as Yogeśvara, the master of all yogīs, and all the wives of Kṛṣṇa at Dvārakā used to keep this Yogeśvara within their hearts. Instead of trying to be master of all yogic mystic powers, it is better if one simply keeps the supreme Yogeśvara, Kṛṣṇa, within his heart. Thus one's life can become perfect, and one can very easily be transferred to the kingdom of God. It is to be understood that all the queens of Kṛṣṇa who lived with Him at Dvārakā were in their previous lives very greatly exalted devotees who wanted to establish a relationship with Kṛṣṇa in conjugal love. Thus they were given the chance to become His wives and enjoy a constant loving relationship with Him. Ultimately, they were all transferred to the Vaikuṇṭha planets.
(Krsna Book).

It is also said that Kṛṣṇa lived in Dvārakā as the husband of the goddess of fortune. Queen Rukmiṇī is the goddess of fortune, and all the other queens are her expansions. So Kṛṣṇa, the chief of the Vṛṣṇi dynasty, enjoyed with the goddess of fortune in full opulence. The queens of Kṛṣṇa are described as permanently youthful and beautiful. Although Kṛṣṇa had grandchildren and great-grandchildren, neither Kṛṣṇa nor His queens looked older than sixteen or twenty years of age. The young queens were so beautiful that when they moved they appeared like lightning moving in the sky. They were always dressed with excellent ornaments and garments and were always engaged in sportive activities like dancing, singing or playing ball on the roofs of the palaces. The dancing and tennis playing of girls in the material world are perverted reflections of the original pastimes of the original Personality of Godhead, Kṛṣṇa, and His wives.
The roads and streets of the city of Dvārakā were always crowded with elephants, horses, chariots and infantry soldiers. When elephants are engaged in service, they are given liquor to drink, and it is said that the elephants in Dvārakā were given so much liquor that they would sprinkle a great quantity of it on the road and still walk on the streets intoxicated. The infantry soldiers passing on the streets were profusely decorated with golden ornaments, and horses and golden chariots plied along the streets. In all directions of Dvārakā City, wherever one would turn his eyes he would find green parks and gardens, each of them filled with trees and plants laden with fruits and flowers. Because there were so many nice trees of fruits and flowers, all the sweetly chirping birds and buzzing bumblebees joined together to make sweet vibrations. The city of Dvārakā thus fully displayed all opulences. The heroes in the dynasty of Yadu used to think themselves the most fortunate residents of the city, and actually they enjoyed all transcendental facilities.
All the sixteen thousand palaces of Kṛṣṇa's queens were situated in this beautiful city of Dvārakā, and Lord Kṛṣṇa, the supreme eternal enjoyer of all these facilities, expanded Himself into sixteen thousand forms and simultaneously engaged in different family affairs in those sixteen thousand palaces. In each and every one of the palaces there were nicely decorated gardens and lakes.
(Krsna Book).

The queens of Dvārakā were so fortunate that they got Lord Śrī Kṛṣṇa as their husband and personal companion, although He is not approachable by exalted demigods like Brahmā. Lord Kṛṣṇa and His queens remained together as husband and wife, and Kṛṣṇa, as an ideal husband, treated them in such a way that at every moment there was an increase of transcendental bliss in their smiling exchanges, talking and mixing together. Each and every wife had hundreds and thousands of maidservants, yet when Kṛṣṇa entered the palaces of His thousands of wives, each one of them used to receive Kṛṣṇa personally by seating Him in a nice chair, worshiping Him with all requisite paraphernalia, personally washing His lotus feet, offering Him betel nuts, massaging His legs to relieve them of fatigue, fanning Him to make Him comfortable, offering all kinds of scented sandalwood pulp, oils and aromatics, putting flower garlands on His neck, dressing His hair, getting Him to lie down on the bed and assisting Him in taking His bath. Thus they served Kṛṣṇa always, in every respect, especially when He was eating. They always engaged in the service of the Lord.
(Krsna Book).