This is what to expect:
(1) Major parking headaches. The parking lot is usually too small, and ingress is congested. If you get there early enough, you might be able to avoid ingress headaches.
(2) Congestion in the Kingdumb Hell during the hour or so before the Main Event. You will find your seat, only to be bumped no matter how early you show up.
(3) A boring 45 minute talk, 90% of which describes who is allowed to partake.
(4) Passing a plate of stale crackers, followed by a glass of spoiled grape juice, around the place. Of course, no one will likely partake. Prayers are said at both stages, wasting even more time.
(5) Houndings urging those not yet baptized to join for the very special meeting the next Sunday, which is the next day this year. Those already baptized will be urged to do more in field circus.
(6) Houndings by the hounders. If you are not yet in, you will be urged to start a study. If you are already in, and there is anything you are not doing perfectly, you will be hounded.
(7) Severe headaches on egress. This is not avoidable, since you will be directed out of the parking lot by a specific route whether or not there is actually a need for it. If yours is second, you will have serious ingress headaches and less serious egress headaches.
In effect, if you go, you are wasting your time.