My grandson is turning 10 April 8. He wants to have a party at this place exscape room. I've never Hurd of this but it sounds like fun. We will have about 12-14 people is that too many for group party?

While, unfortunately, we would be unable to accommodate 12-14 people into a single room, we do have a specific circumstance that might fit what you're interested in! Our episode The Gift has two separate, identical playable rooms; if you call in and schedule it ahead of time, we can split up the party into the two rooms and have them compete with each other for the fastest time.

I believe that is to many. I would give them a call though the rules of capacity per escape room apply the most in your situation.