Wedgewood drink tickets

Hello, we plan on using the Wedgewood company for our wedding and have venue tours within the next two weeks. Has anyone done drink tickets at one of the venues. I plan on doing the classic package but I want to do 2 drink tickets for each guests before making it a cash bar. We can't afford an open bar but feel bad having guests pay for drinks. If you have done this how much did you pay? I plan on asking the venue this question but I'm just curious