Relax the Saturday afternoon away near the finish at Dolgarrog, where you can chat about the day's paddling over a snack while waiting for prize giving in the Dolgarrog community centre just up the hill from the car park. The snack is provided by the organisers, as part of the entry fee for participants, and for a small price to non-participants.
There are lots of things in the area you can do on the Sunday, so why not come for a weekend in Snowdonia? You could try dry-slope skiing, climbing, walking, mountain biking, pony trekking, kiting, stand up paddleboarding, ten pin bowling, fishing, sea kayaking or countless other activities.
There are B+Bs, bunkhouses, campsites etc. listed on the Accommodation page