We were worried about the same thing, but could only do the Monday BC. We booked as soon as it opened up and it ended up selling out about 2 or 3 weeks before the date. I’ll tell you that it’s not the day that makes it crazy or not... it’s the group of people. Our previous cruise was crazy and it was a sell out too. Although our cruise last month was sold out, the first half was very mild. But after a few drinks, everyone finally loosened up. It ended up being an amazing time with lots of crazy action!
Same schedule, same staff, the only variation is different people. No real difference between the two.
I would suggest doing the first one you can based on your dates. Its a great way to meet people, plus you can always do another one if you are there for 2 sailings.
