Best of luck Tom with the activations.
As for flying… I’ve started journeying along Luc ON7DQ’s route. I have bought a couple of Aluminium power cases that hold 18650 cells. Insert cells, close case, place in bag. Looks like all the other power banks the security bods see though their X-ray machine every day that don’t cause any concern. For use, I have a couple of 18650 cell holders wired for 3S1P use. Arrive at destination, pop out cells and place into other holder.
Though TBH, I’ve not had an issue flying with RC LiPos for sometime since I started dressing the cables neatly before placing the LiPo in the fire safe bag.
See SOTA Quarterly News July 2019 for more info.