I might be in Belgium for 4 days of sight seeing and was wondering if there are any passes that give you discounts to museums, tourist attractions, transportation? Right now I'm guessing I will be in Brussels for 2 nights and Bruges for 2 nights. I might just decide to stay in Brussels the entire time and use the train to go places since Bruges is only about an hr away (I believe).
Also when do the crowds get bad? I'm guessing May would be ok.