Not sure if I'm being PFB about this one - I don't think I'm BU but you never know!
DH and his brother share a birthday; SIL wanted to organise a joint surprise party for both of them a couple of weeks beforehand (it isn't a 'significant' birthday for either of them, just a nice idea). Unfortunately this is the same date as I'm due to give birth to DC1. I know most first-borns are late and in fact MW has suggested DC1 may be early, but all in all I'd rather not go.
DH isn't keen on the idea either as he wants to be there for the birth rather than at a party with BIL's mates. We sort of assumed we'd been invited out of courtesy since SIL is perfectly aware of the due date (and they already have DCs of their own), so thanked SIL for invitation and said we wouldn't be going since party is on the due date.
Now SIL has 'helpfully' suggested we should have a party near the hospital 'just in case renegade needs to make a quick exit'. BIL's mates are now up in arms because it's further for them to travel. I still don't want to go - not relishing either being massive in front of strangers, going out five minutes after giving birth or having to politely excuse myself and remove discreetly to the hospital when labour starts.
SIL is a bit miffed that we're not going 'since it's in DH's honour as well and it would be so nice for her own DH to have a joint party'. AIBU to decline the invitation, or should I just 'suck it up' and say we're going anyway? (DH thinks SIL has gone mad, but maybe we're both being precious about it..)