In the end it was too dark yesterday evening, so we left coat 3 until this morning, and then did coat 4 after lunch - meaning that by mid-afternoon it was dry enough to take all the tape away and tidy up and declare it to be a job well done. It may not be perfect, but it's not bad at all even if I do say so myself. Mike did all the edging today too, and provided lots of encouragement :)
Photos of the results, and the process, are on Facebook.
Also managed to do a bit of pruning and dead-heading in the garden, but looking forward to a lazy day tomorrow, and maybe a bit of a walk.