The Celtic Swell is a great place to meet friends and enjoy a beer. The Swell also has a pretty good menu for Sunday brunch and every day of the week. I especially like the curry potato and french fries. I also suggest a bloody mary, if you aren't vegetarian, since their mix has anchovies in it. The Swell brings a nice change to Alki, it is comfortable, family friendly and clean.
The Swell seemed to loose a lot of business in winter, they trimmed down their menu. I hope they are now on the upswing.
They have a trivia night also, for me it was impossible. Not sure if it is Tuesdays or Wednesdays you'll have to call.