In reply to discosucks:
Betws Y Coed is great for pubs and resteraunts. It gets silly busy in summer on the weekends however.
Blaenau Ffestiniog won't be everyone's cup of tea, but the slate walks around there can be really interesting. Abandoned mining equipment, steep ramps, tunnels etc. Strange stuff around there.
For breakfast, Siabod Cafe near Capel Curig. Sorted.
Sport routes, urmmm, Llanberis slate, but I remember it being pretty tough. Sure others can advise.