The pizza is actually pretty good :) They also allow you to bring in stuff as well and there's plenty of Room for the party. We've already had 3 that we've attended there. Things change quickly all the time so I would call and ask what specials they can hook you up with, so there might be a deal where someone can jump free on their birthday but I'm not sure.
They have birthday packages that range in price based on the total number of jumpers. It include pizza, goodies for the birthday jumper and a goodie bag for each jumper.
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