I don't have any allergies, but have dislike for any kind of salad dressing, any of the normal "spreads" put on hamburgers, etc, etc. Between cruises and trips to Panama, I've gotten pretty good at being very specific.
I just got back from lunch - I had my Shrimp Louie with NO french dressing and NO picalilli. It came exactly as ordered. I also ordered my salad with no dressing and it came that way.
Last night at dinner, I had fried mushrooms. I can't remember know what the "sauce" was, but I asked for them without the sauce and they came as I ordered them.