Hey Kate, good luck with the party.
We have been open about 7 weeks, and have had a few parties and corporate days. Have learnt more each time, but I reccomend getting 5 friends together and play what ever multiplayer to ensure it works fine. Dont wait until the morning of the party.
We had a party of 13 on Sat.. and with 6 stations we set up each space with a different experience. Couple of rollercoaster. Beatsaber..the lab etc.
Was our most successful group yet with the boys getting lots of experienced and the mum was stoked, no trying to get people into multiplayer which can be a pain..
Anyway.. good luck