yeah the buses will be on, but are neither that straightforward nor pleasant....and you can get a taxi if you can find one....it can be just kind of a pain in the arse to get around on a sunday night, and seeing as ive got a car, it would be better for me to come to where you're going to be at rather than vice versa. and you can walk most places (in the daytime anyway) but to walk from where the o2 academy is to the west end would take you at least 30 mins, even if you know where you're going
are you actually going to the gogol bordello show as well? cause there's a couple of good vegan cafes down the bottom end of the city center where we could get something to eat and a drink before then if you want (its also right next to the st enoch subway, which if you got it in time would take you more or less right to the door of the o2 academy).
the kelvingrove museum is great, and free. that would be the only thing i would absolutely 100% recommend that i can think of at the moment