Nice to meet you today Lithium-dude.
Arm warmers.....top tip, don't wear them under you wet suit. Roll them down to the wrist end. When you come out of the swim, put them on your wrist and leave them rolled down. Get yourself out of t1 and wait until your settled into the ride. Then roll them up, you should be dry by then and they will roll up easier.
I can't race tomorrow due to my back problem but I will be in bike transition, have a great race!