The water will be cold tomorrow.
Best to be as prepared as you can be;
If you have a wet suit or dry suit, it will be helpful (not required)
In case of a spill; stay near the group so that we can get you right out of the water, bring a towel & change of comfy warm clothes. If you have any wool, that will keep you warmer than cotton in the event of a swim. Seal your keys, phone, etc. in a dry bag or a couple zip-locks.
Hope to see lots of you there!