I'm assuming that the standard rooms don't need to be reserved? Or can they be reserved? How many people can fit in a standard room?

Any of the rooms can be reserved. The 'standard' rooms you can get if you just walk in but it's much easier and makes getting in faster if you call ahead. And the smaller rooms you can easily fit 6 ppl. Couple more if y'all like each other. But, they have rooms that can support much larger groups if need be

Over the weekend it's best to reserve a room, just in case because rooms do sell out quite quickly. For the weekday you could most likely just walk in. They fit about 6-8 people.

Never assume just call them