A close friend has a big birthday this weekend with multiple events. She has invited another close friend of mine (friend 2), who is travelling down especially. I will be one of the few people that friend 2 knows although she is social so will be fine. I want to go but have been feeling under the weather so don’t want a very late one (I think friend 1 will be fine with this, a few friends have done similar at my big bdays and I appreciated the effort to come in the first place). I am worried that I will have to stay the whole to keep friend 2 company though and feel a little anxious because I didn’t invite her yet feel like I will need to stay for this reason - for various reasons I have a really hectic weekend and feel a bit stretched between different obligations and friends…
is it bad form to leave a little earlier than the end? Especially if my friend won’t really know other people?