While you might not have any other use for the 30-day membership, it would reduce your cost for this visit if you decise you want to use the club. The 30-day membership for one of you would allow two guests, so you'd get three people into the club for $99. Add another day pass for $50, and the total cost for three people is $149 rather than $200 if you buy four day passes. Still questionable whether this is the best option, but it is a cheaper way to get four people in.