My husband has a conference to go to in mid May in Baltimore (about 2 hours from home so we'd drive). He scheduled classes for Sat (4 hours) and Sunday (8 hours) then Monday and Tuesday he could come and go as he pleased to different work shops or speakers. We'd would probably drive down friday night and drive back tuesday afternoon. We'd be staying in a hotel near/at the inner harbor (not sure if they would let us do a suite). I'm torn between wanting to make a mini vacation out of it or just staying home and solo parenting. I also dont know what activities we could do around hubs schedule or what i could do with our daughter solo. I dont want to just sit in the hotel room waiting for my hubs to be done classes.

So far I was thinking Aquarium on sat afternoon, and maybe catching a ball game.

Any locals that can tell me fun, easy to get to spots we could go? Children's museums, parks/playgrounds, shopping?