PORTRUSH Based on a June/July 2011 visit as one of a group of eight American golfers.
(1) 55 Degrees North, excellent food, ambiance and service.
(2) Ramore Wine Bar. There are a bunch of Ramore restaurants in the building. I recall the Wine Bar is on top. In any case, it is really more of a restaurant than wine bar. Order your food and drinks at the counter, and pay then and there. Carry your drink to your table. A server will bring the food later. Took us a while to figure that out. After dinner I went upstairs to a night club place. Great non-Irish music - "rock" - I was an "oldster" there, but bought a beer and took in the atmosphere. Fun. The folks I spoke with were very friendly.
(3) Harbor Bistro, on the lower level of the building complex, also part of the Ramore group. I'd recommend it too. There is a Ramore Asian restaurant in the building - we did not go there, so can't tell you about that.
(4) Great Irish music pub - Springhill Bar. This place was lots of fun, and we met friendly and interesting locals. They may not have live music every night, but that's what you want to look for. I could tell you a good story about some folks I met, but it's personal. I hope you can find your own (good personal story).
(5) We stayed three nights at the Ramada. The restaurant was nothing really special, but the food was very good and the servers friendly. You could not go wrong with a meal there.
In sum. Go out. Don't just buy booze and drink in your room.
P.S.: Good luck herding 16.