Some types, yes, although the service is at such a high level that they are usually accommodating far beyond what you'd expect.
The restaurant might have a 7 course tasting menu with fixed items on it for example, but if you say you're allergic to shellfish, they'll often not just remove the shellfish from your dishes, but re-engineer or fully replace the dishes that contain shellfish so that what you're getting isn't any _less_ than what someone eating shellfish would be having.
The restaurant might have a 7 course tasting menu with fixed items on it for example, but if you say you're allergic to shellfish, they'll often not just remove the shellfish from your dishes, but re-engineer or fully replace the dishes that contain shellfish so that what you're getting isn't any _less_ than what someone eating shellfish would be having.