To excel in any endeavor is to truly enjoy what youâ€™re doing, to be passionate about it. So I believe that would be the first trait... ask yourself "am I passionate about _____?"
Find what youâ€™re passionate about and you will be successful. Service professionals must be passionate about being a servant.
It also helps if you are passionate about food/wine, etc.
Then, enthusiasm is important. When you are excited, you will get others excited. Which means they enjoy the experience, verses just being satisfied with the meal that is served? All this translates into your pocket. $$$
Finally, don't take it too seriously. Have fun, be passionate and when problems arise, resolve the issue, ensure satisfaction and move on to the next great customer experience.