need advice

I wanna know if im being unreasonable or not, i need advice. so i usually go to gigs with this one particular friend and on rare occasions my best friend tags along, and there's this gig on Sunday which is only 2 days away but we've been talking about this gig since December and been super exciting cause all our favourite local bands are playing and originally my best friend was supposed to come then she said she was gonna bring her boyfriend then said she wasn't coming cause shed just hang out with him instead then said she'd think about coming then decided she wantef to go to a party that starts at 1 (the same time the gig starts) and there are 8 bands playing that night but theres no band order and she's trying to get me and my other friend to go at 3 instead of 1 but i really don't want to cause we don't know what band's we'll miss and ive been super excited about it for a while and she's trying to make me feel bad about not wanting to go in at 3 instead of 1, am i a bad friend for not wanting to? i feel really bad but she knows how excited I've been, really need advice 👍