I've worked in the service industry, a high end restaurant, as an assistant to the server.
Basically, what anyone in service (esp. High end service) is looking for is someone who can smile through anything, I mean getting yelled at, getting drunkenly hit on, working with incompetent people and being able to pick up the slack without resentment being shown to the customers, etc. So really highlight how well you handle high stress situations, how you can work in a team environment, have good communication skills without being gabby, etc.
My favorite people to work with were always those who were willing to do whatever it takes to make customers happy, worked fast, hard, efficiently and always communicated what they are doing and are versatile, and pay attention to what needs to be done. In my job, sometimes the host would be busy and I would have to seat people, explain menu, hang up or dish out jackets, etc. And sometimes I would be busy and the host would have no issues grabbing some plates for me.
It's a really fast paced, customer oriented business with high burnout rates, so stay positive! I really enjoyed it as a life experience but wouldn't want to work service as a career, but some people are just excellent at it and love it.
They say money doesn't buy happiness -- well happiness doesn't buy horses!