mine don't like celery either - but they aren't so clever about putting their message across!
few weeks ago, i had lunch in the restaurant of a big store in manchester. the nearest thing on their menu that i could eat was a salmon sandwich with prawns... so i asked for it without prawns, and very obligingly, they provided. only, when they served the open sandwich, picture a heap of delicious salmon, crowned with a pile of about fifteen capers....