The good thing about Galway is everything within walking distance, the claghda village is supposed to be worth a look I've never gone myself but it's where the claghda ring was created. Silver strand is a nice beach to visit but if the weathers bad don't go near the beaches.
Good pbs to visit are,
The Kings head
Foxes pub (that's a backpackers pub now)
Other than that just wander around there are loads of pubs in Galway you'll never be that far from one.
Fat Freddys was always supposed to be a good place for food because they do a students menu and it's all good food.