If you're talking about ordering a cake or something along those lines then check the cake stickie. If you're talking about dealing with special dietary needs then contact Special Diets. If something else then you'll have to explain what you're actually needing for us to give advice because I can't think of other types of things that would require contacting restaurants ahead of time. Restaurants no longer do things like special custom menus or other gifts like those. If you're wanting to do something like have them present a ring for a proposal then you'd talk to your server about it when you arrive (excuse yourself to go to the restroom to make arrangements).