Have Bedroom and Bathroom Caps

Sharing beds and baths between those who barely know each other has the potential to cause some friction. Ms. Clause suggested limiting the number of people per bed to two, even with a king-size bed. “I guarantee you that the third girl that’s stuck in the middle is going to be cranky by the end of the weekend,” she said.

As for bathrooms: three to four maximum. But if you’re staying in a rental home that doesn’t have as many bathrooms, plan accordingly between planned outings. “Make sure you plan a little extra time between your reservations,” Ms. Clause said, “so each girl has plenty of time to make themselves look pretty and be ready to go so you don’t have girls fighting over the bathroom time.”

And be smart about the rooming situations. “Do your homework ahead of time: Don’t pair people up to stay in rooms together who have different creature comforts,” Dr. West said. “Try to pair the early risers with each other, and the neat freaks with each other. This is especially important if you have a group of women who might not know each other well.”

Plan for Downtime

If you’re the one planning reservations and activities, be realistic about timing. Big groups generally tend to move slowly, and even more so when late-night partying is involved.

If you try to squeeze in too much during the day, it can result in some of the women missing the “planned activities, losing a deposit, or even just holding the group up,” Ms. Clause said.

Focus on the Bride

“It’s nice to see people cater to what the bride likes,” Ms. Odhner said. “I think as long as the message is clear that it is about the bride — that builds up the community in the group.”