Thanks for checking out this very serious game! It should run for a couple of hours with a standard group size of 4 (though can be longer depending on how focused players are on the wonders of bowling or if there are more people crammed in).
Its 5 frames for each person - so everyone will take a maximum of 10 throws (or 5 if you are super talented and can't stop getting strikes).
I hope the event goes well! Let me know