The hospitality house beer is of course free. I think you get two tastings, unless you attend the beer school, which you get food pairing and I think 5 different tastings. We didnt drink any this trip, too many kids to take care of, but I think in the park they were around $5.00.
a large Mich Ultra is $4.99 at SW and BG. the good news is they'll give you your AP discount on beer. the other parks exclude alcohol in their discounts.