I'm on the unpaid portion of maternity leave. I have enough savings to get me through the rest of the year with everything I need, but Christmas etc. will be tight and I've been foregoing luxuries for a while now.
Group of four friends - really, really close friends who have supported each other through thick and thin for over ten years. One was due to get married in June but cancelled due to COVID-19. Corresponding hen do cancelled - this was a weekend away with a fun activity, plus dinner etc., for which we'd paid £240 each. This is now being held as a credit with the adventure company and we plan to do the weekend when restrictions are lifted (probably next year).
Friend has decided to go ahead with the wedding at the end of September even though it will be immediate family only. Totally fine, understand that it's her wedding and her choice, as gutted as I am to not be able to see her getting married.
However, in addition to the paid-for weekend that we'll eventually rearrange for next year, she wants us (her close friendship group) to have a smaller hen do before the wedding. This will be close to £150 (probably more, with drinks etc.) I'm also mindful that we'll need to buy a wedding gift too. Another of the group jumped in to say "BOOKED!" really fast, so it's a done deal.
I can't not go. She's a fantastic girl and I really love and value her as a friend. So I guess it's not so much "AIBU to not go" as "AIBU to be pissed off that she hasn't even considered how skint I am at the minute" . . . 
I don't want to burst her bubble. She's had a hard year - everyone has, I guess - and there's no point in complaining as it will only sour the occasion.
Basically I just needed to vent . . . 