I will tell you one of my secrets of being an above-average-waiter. The secret word is proactivity, anticipating on (un)expected situations. The biggest fun is when your guest doesn't expect this.
Some time ago I had a family with a girl who had an allergy of gluten. It was her birthday so we woud celebrate it with some music and all the waiters clapping etc. In all the cakes we have there are gluten, so the family was thinking about cancelling the cake. However they ordered it because of the little ceremony we perform.
In the kitchen I got suddenly a image of everyone eating the cake but the birthdaygirl who was looking sad to everybody eating her cake. So I managed to bring the cake and a fruitsalad for the girl. Needless to say that the family was very happy with this!
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Every waiter knows the secret pleasure of a waiter: hearing something that is not meant for you and taking action on it. Once on a hot day I heard a guest on 3 meters distant saying to a friend "Oh, I would die for a glass of water'". Several seconds later I stood there with it. The water had cost € 1,50 but her face expression was priceless! (and of course you pretend not to see that reaction;))
Four Seasons, a hotel chain with luxury hotels (in Paris they have the fabulous George V) is also listening to her guests even while they're not really talking to them. On Twitter! A guy complained that the music in his room was very dull. I'm sure his face would be priceless when he came back to his room where the housekeeping left a bottle of wine and a kind letter with a list of all the radiostations attached.
Keep the secret pleasure alive! (and enjoy it....)