It's always optional, but they are doing a service for you by bringing your drinks and removing your dirty dishes.
I normally give 10%
Tipping is almost always optional, but I agree with previous comments
The staff is very well-mannered very nice and polite and the food is great I have no complaints about this place if I could go today I would be down there right now but it's 45 miles
Thanks! Your answer is awaiting moderation.