why am I feeling I've smoked weed while reading your post? 

so far I tried to understand..
give 4 more days for yourself to enjoy, .. check the places.. why worry when you can't undo what's been done? 
chillax and enjoy that 90 dollah..
Suing is out of scope, mistakes happen and how could you not be checking on 'em periodically before setting out? 
Put your time now,money and energy to something productive and memorable.

dude, I would at least re-confirm twice-thrice. (first I would book a ticket, weeks later, I would ask for window seat, weeks later, I would act totally dumb and ask silly questions, weeks later I would call and ask how to cancel my ticket but not really do it,.. weeks later, I set out..with print version of everything on my hand)

Thanks Sajha, at least I'm learning a lot from peoples mistake here, I mean it !