I couldn't think of any bad restaurant experiences (apart from the food poisoning incident on Larchmonth I mentioned a few days ago, and that was sort of bad-after-the-fact.) But DR Matt reminded me of a similar story.
I was travelling out west, working on a doc for the Baptist Home Mission Board. (At one point in my life, this was the only film editing work that existed in Atlanta!) The director was a very obnoxious German guy. Just a quick example: I lugged a very heavy wooden tripod in St. Louis for 10 blocks. And then a few feet from our hotel, he wanted to carry it. "I don't want people to think I made a *girl* carry everything!" If something bad happened to a crew member, he would always bemoan "Why does this sort of thing always happen to ME?" He was so self-absorbed and obnoxious that it was sometimes entertaining. Sometimes.
Out in Berkley, we went to a restaurant and there were slight problems involving getting served--nothing out of the ordinary. The director complained and we got a free round of drinks. Emboldened by this, he started looking for situations to exploit which might get him more free benefits. This guy was notoriously cheap, even though it wasn't his money, it was Baptist money! Sometimes when Greg and I worked with him, he would take our money, including our standard 20% tip, and then pay the bill and leave about an 8% tip on the table!
Back to out west...
The sound man (not MY soundman) was also enjoying this scenario. We went to a very nice restaurant---we didn't have reservations so we had to wait a bit and have a drink. The food came and even though it was perfectly fine, the soundman and director complained. It was not up to "the quality they were used to"! I told the waitress mine was great, and then these two guys harrassed me for not playing along. They made the poor waitress miserable strictly for their own gain and they even made her call the manager over at one point.
After our meal, I went back to the kitchen and found the waitress, who was almost in tears. I apoligized for my party's obnoxious behavior, told her that I knew they were going to give her a crappy tip after all that, gave her 20 per cent tip and told her: "Be thankful. You never have to see us again. I have to spend another week with these jerks!" The rest of the trip, I would take a book and sit at another table when possible.
The only plus to working with this director wass that on one shoot, I was booked with a soundman named Greg and we bonded together in the face of adversity. By the end of the trip I was totally smitten.