Saturdays are busier, if you want a more relaxed birthday Sunday is better
If you call and speak with Andrew he might be able to do a discount based on the number of people. For my son's birthday party he waived the fee to allow all the players to swap the nerf guns out. It was about 3 dollars per person saved. Also we went on a Saturday which had a ton of players and the kids loved having so many targets to shoot at. I hope this helps.
I've done several there, great rates and a fun time for all. Highly recommended. Either day is good but you have to reserve a spot in advance.
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