Well, looks like you've got two events on both sides of the fence, as it were. Two otaku-vents (Kumoricon and Swing Dance) and two family events (camping and camping). You are for sure going to Kumoricon and for sure going to the second camping trip, so they cancel each other out. That leaves camping and the swing dance. I'd ask do you plan to actually do much swing dancing? Because unless you do, I'd say just go ahead and do the camping thing, for your mom's sake. Without the dancing, I imagine the swing dance is pretty much just people chilling doing what you could do any day, really. Of course, ultimately it's your choice, but yeah, there's my advice. Go camping, even if it doesn't seem like the best idea at the moment, it would probably be a better use of your time. Maybe, *shrug* :\