Hi, I've bowled in them in the past, and run one now. Basically, bowlers pay $15 a night, if your linage is 7.5, then your getting 7.50 per bowler per night into you trip funds. Mixed leagues, each team gets 2 rooms and 4 plane tickets, they figure it out beyound that. There is a fixed date, I tell everybody the dates of the trip at the beginning of the season so they have 8 months to arrange their schedules. If the date is flexible, it's very tough for people to plan their time off.