Back in the early 1980's in my congregation was a brother reaching out for the "priveledge" of ministerial servant . He was in his 30's had a family and was popular with the congregation.
Trouble was he had a tightly trimmed beard. We would work on the field often and on one occasion we talked about this issue of facial hair and he was told by the body of elders he would have to lose the beard if he wanted to be a n MS. He agonized over this and did'nt want to shave it and even said to me that he had a skin condition that shaving irritated but still the elders said he had to shave . Well he did shave and shortly after was made an MS and his skin did visibly show problems but he must have found a way to treat his affliction for he became an elder and is still a JW to this day.
This is only one instance I have seen of many ,so anyone who tells you the WTS does not enforce this is deluded or lying .