How do you do things around babies bed time?

Sh

Tonight a friend is having a small get together and invited us I really want to go but she doesn’t want anyone over until 7:30 and usually we put baby down at 8. Will it hurt if we stay out until 9 and get her in bed after that? How do others work around this? I’m a FTM and clueless also it’s an outdoor get together and she’s only 2 months so is just hold her the whole time. I’ve had her on this schedule since 2 weeks and she sleeps perfectly at night. I just don’t want to mess up her sleep.