Krsna (God) is the source and cause of all things and nothing can operate or exist separate from Him, not even a blade of grass can move without the will of Kṛṣṇa who is the Supreme Personality of Godhead and cause of all causes.

So, how can the individual jiva-souls freely voluntarily express themselves and make their own unique choices serving Krsna in the spiritual world, when everything is under Krsna's absolute control, including their free will? 

Their are those who wrongly believe the ultimate goal of "devotional service" and "surrender" to Krsna means being Krsna's thoughtless none contributing slave, mindless puppet, obedient dog and "yes" men and women. 

These uneducated fools believe that when the individual jiva-soul returns back to the Kingdom of God (the Vaikuntha planets and Goloka Vrindavana), they find out that the real meaning of "surrender" is not expressing themselves the way they choose but allowing themselves to always be told how to do think, act and serve. 

They wrongly believe "surrender" means giving up your "free will" and always being told what to do, think and serve without any need of personal individual unique voluntary contributions.  

This blatant mindless "surrender" is really what impersonalism means, which is the pathway leading to spiritual suicide that extinguishes the individual jiva-soul's unique identity, personality who naturally have their own abilities to express themselves the way they choose to serve Krsna   

Freedom of self-expression always voluntary exists in the spiritual world for the individual jiva-souls. This eternally allows them to have a "two-sided" cooperative reciprocal exchange with Krsna that forever expands their intimate loving contributions (loving service) in their unique relationship with Him. 

This eternal "independence" experienced by the individual jiva-souls, is allowed by Kṛṣṇa to encourage unique individual personal voluntary contributions that they choose to serve Krsna with instead of Kṛṣṇa dictating how they should think, act and serve. 

Each individual jiva-soul (devotee) eternally has their own independent personality, character and unique spiritual bodily form of their choice in the spiritual world, separate from Krsna's influence that He allows so a two-way voluntary relationship of loving exchanges always exists. 

In other words, Kṛṣṇa gives His devotees the permission to always express themselves in the way they select, which means voluntary offering devotional contributions and service in the way they choose. 

This choice also includes rejecting Krsna if a devotee decides although only less than 10% of devotees (individual jiva-souĺs) in the spiritual world of the Vaikuntha planets and Goloka-Vrindavana, take that foolish pathway leading them to the temporary mundane material creation of Maha-Visnu (Krsna's expansion).

This means over 90% of individual jiva-souls (devotees) never fall down from the spiritual world because that is their choice.  

Without such two-way freedom of individual expression (free will), then genuine voluntary loving exchanges, reciprocation, cooperation and unique contributions on a "two-way" street with Krsna can never exist.**.