anyone going to the HMV release event in glasgow/ know what to expect from it?

Hi! im wondering if anyone else is going to the album release thing at hmv (specifically glasgow) my friend might not be able to make it and im a little nervous going on my own and ive never been to any bm related events. has anyone been to similar events for other bands? are they super busy/crowded? im contemplating whether to go at all or just wait 1 day to hear the album.