AIBU to think using their voucher only on their share was rude?

[Dinnerdrama]

We were invited out to dinner with friends at the weekend.They planned to visit a particular restaurant and asked if we’d like to go along.
We had a nice enough meal, couple bottles of wine, liqueurs. All quite pleasant for a Friday night.
When the bill arrived one of our friends presented a voucher and asked for the bill to be halved and the voucher taken off theirs. The waiter seemed slightly bemused and repeated back the request. Our friend repeated and clarified they wanted the bill split and the voucher taken off their half.
I almost died of second hand mortification. Is this not CF of the highest order?! I wouldn’t dream of doing this when I invited people out. If I was that skint, I’d use the voucher as a couple and
not invite others along.
For the record, I have been out for a meal previously with them where I have had a voucher and I had the voucher taken off the whole bill and split the remainder.
Cannot believe the brass neck, it has put me off going out with them again. Massively embarrassed on their behalf, not sure why, they didn’t seem to be!!

They are cheapskates. Don’t go out with them again, or if you do, get a voucher and do the same to them.

Totally agree with you and am quite shocked at the number of people who think jt is ik. I have had vouchers in the past and contributed them to the whole cost. ImO if they wanted to use it for themselves,then go out by themselves.
Rationalky it is their voucher to do what they want with it,but their behaviour was crass and lacked class.

I think the problem is that they chose the restaurant based on the voucher they had. So you had to go where the voucher was accepted but not benefit from the voucher. You were mere pawns in their game.