Just wait until you get baptized. It will no longer be so much fun, and they will expect much field circus out of you. True, they will not expect you to revert to your pre-operation sex, but you will be denied sex (you will be deemed homosexual if you are a woman through this operation and you have sex with men). Is celibacy for you? If so, by all means stay in the jokehovian religion because you will be expected to maintain it.
Not to mention the other rules. Just wait until they start pushing you to doing ever more. Pious-sneer. Quit whatever job you have to do more in field circus. Quit celebrating all those holidays (birthdays, too) that they deem "pagan". All your fun gone. All your time, too. They even control your entertainment--listen to "bad" songs or watch a "bad" movie, and expect the hounders to show up. And you will be herded through whatever stupid rules your a$$embly might have, including pressure to donate beyond what you reasonably can. (And the one towel rule--and obeying the signs--and possibly having to stay with your congregation part or all the time during the event.) Once you are baptized, they lower the boom. Right now, they might be lax because they want you to think it is reasonable, but once you are all the way in, they won't be so lax.
Yes, it hurts to leave now. But, it hurts much worse when they make so many rules, and then throw you out for breaking one of them. Better to take the bee sting now than a fer de lance snake bite at that time.