It says up to 22 person but what if I only have a group of like 4-5 buddies. Is there still things to do or is that too few people.

You can come with 1 up to 22 persons per session. Others will sign up for the same session until we reach maximum of 22. We can play with as few as 6 in a session.

If you are recreational players you run the risk of getting in sessions with much more skilled players. They apparently try to balance the teams but it isn't very fun when you are just destroyed every game.

Naw it fine. I'm pretty sure u can do it solo if u want

They will fill in your slot with other small groups

Im pretty sure they will still take it. They don't do refunds so I assume it still happens