Interesting. 11 beers is doable . US measures are smaller than a UK measure. so 11 US pints is 8.8 UK pints at two units per pint is around 17 units of alcohol. Spaced over 10 hours you would have 7 units on board at park closure which is 3.5 UK pints. If you are interested in trying the Bavarian Wheat beer in Germany, it is only sold from inside the bierkeller and not on the taps outside.