Being used as the family taxi.

[Dippysnowoman]

AIBU to not want to ferry dp's family around after a family party this evening.
We live over an hour away from the venue so are resigned to the fact one of us will drive that's not a problem. However dp's sis has now suggested we pick his parents up and take them home afterwards. They live a further 40 mins away.
Making our journey 2hr 20 ish.
They also want to leave early so due to the distance it's not an option for one of us to 'nip' them home.
I should add dp's father was quite prepared to drive before sis offered our services.
I'm not being unreasonable am I??

If it was en route and timings fit for all then I wokld do it. I wouldn't be going so far out of my way for timings that don't fit around you either.

YADNBU....

Why did Sis offer your services?! Cheeky much...

Unfortunately, the time to decline helping has passed, but in future make sure the cheeky bint doesn't offer your services again without checking with you first....

You could just phone them and tell them that you're sorry your sister offered you as a taxi but as they live some distance away and want to leave early it's probably best that they drive themselves as it's not convenient. Tell your sister never to do that to you again. If you want to give people a lift you'll offer, you aren't her skivvy.

Nope. If dp's sis offers your services I'd be making sure dp was doing the running home.
And I'd be staying until I wanted to leave - if you're a passenger then you're at the mercy of the person driving - I've stayed at plenty functions waiting for my lift - and sucked it up.
Real question is, why does dp's sis feel comfortable offering you up as a taxi, and why doesn't dp shut her down?
I know, I sound harsh, but boundaries matter to me - especially since fil was happy to drive prior to this...

Why has the time to decline passed? the party isn't until this evening.

Turn up and get absolutely wrecked.

You should call DP's sis and tell her firmly never to offer your services again. You aren't her chattel.

Thanks all... I knew I wasn't but good to know I wasn't.
It's not too late to let them know so dp is now informing them we'll see them there.

Woohoo! A dp with a backbone!! (I mean that in the nicest possible way - too often us women end up having to negotiate with our in laws!)
Not even a tiny bit U. Have a great time tonight