id set the pots into boxes in the back of a truck or something...shut the boxes if u can doing it during the dark period of the lgihting schdule...
as for stress....try to keep the pots secure inside the boxes so they dont move around much and try to go at a steady pace when driving, no stop and go stop and go...it could potentially snap a stem..try a smooth road to

as for the resovior i dont know ur set up so i dunno if itll spill or not...