Sorry to do another aibu.
A friend just rang up to ask if it was ok to pick a parcel up. I explained that I was just about to have a soak in the bath after work, and although I work at home freelancing, I still need my half hour or so to unwind afterwards.
I don't think he liked that, and I reckon this nice couple think I'm being off with them and rude. However, I don't think either of them would have a problem asking me to pop over another time if the situation was reversed. In fact, they would probably just say they were busy if they didn't fancy it.
I am crap at being assertive and never know whether this kind of thing is ok or not.