The space decides more about the day than the booking does, and almost none of it shows on a website.
Once the date is held, the remaining risks are physical: where people wait, who is allowed in, what can be brought, and how everybody gets there. These vary at every location, so ask rather than assume, and ask before a deposit rather than after.
How many people the space can hold and how many it can serve at once are two different answers. Ask both. Then ask where the people who have finished wait, whether that area stays available to your group for the whole booking, and whether it is shared with other customers.
Ask whether the location can serve minors at all, what it needs from a parent or guardian, and whether a mixed-age group can be in the space together. Some services are not available to younger guests regardless of what a parent agrees to, and it is better to know that before you invite them.
This is entirely the location's call and it is also governed by state rules. Ask what is permitted in the space, what the location provides, and what you would be bringing or arranging yourself. Do not plan around an assumption here, and do not let a group member plan around one either.
A group arriving at once is a parking problem before it is anything else. Ask where people park, whether there is a limit, how the entrance works, and whether the space is accessible for anyone in your group who needs it. Then send that information out with the time, not after someone texts from the curb.
Tell us the occasion, how many people and when you need to be done. We will find the locations that can hold the group and get the terms in writing.
Book the GroupA head count and a date is plenty to start — we will follow up on timeline, deposit and what the location needs to know.