This is SUCH a British thread.
Someone complains about bad service and we all join in with tales of bad service and very little sympathy for the OP or her traumatised DH.
I recently watched a youtube video of Evan Edinger of, "tell me you are British without saying you are British" OP your husband might enjoy it, it included things like staying in a queue and just scowling at queue jumpers, and maybe an under the breath tut.
Being able to drink scalding hot tea.
OP
Can your DH drink a glass of pop without half of it being ice?
Oh my own story of bad service is, well I have to say that I've not been there for years but one of the waiters at the casino was so bad it was almost worth going to see how bad he was.
He was called Dennis and we nick named him, 'the menace'.
The type of things he would do, well once I was with a friend, we were both seated in the restaurant part, and Dennis came over to take the order, I ask what red wine they have, Dennis doesn't know, it just comes out of a tap at the bar, I say I will try a glass (being brave I know) so he writes that down, my friend starts to order a drink but he notices someone at the bar so runs off to serve that person and then someone else was at the bar so he forgot about us.
You could order red wine and he would bring you a beer.
He worked there for years (could still be there) and I have no idea how he was still employed.