Cycling for a full 12 hours on your first day wasn’t the plan, neither is it advisable. My ass hurt like hell. A regular cyclist I may have be but I was very clearly not yet a seasoned “tourer”.
Having done almost no planning whatsoever and getting to my first over night stop point only to discover the camp site was full, was a blow. What had I done? Why didn’t I think I’d have to book campsite the whole way round? What happens if I have to wild camp for the whole thing? I’d never camped before let alone illegally… balls. It really kicked in how stupid I’d been to assume it’d all be fine.
Never assume. Oh and also, always use suncream. I cannot stress that enough.