The logistics of catering for the kit needs over some 22 players and 11 staff over a five-day period in La Manga calls on all the planning and experience Roy can muster.
"Yes, I would say that the first five weeks, which is our pre-season, is definitely the hardest part of my calender year," he admitted.
"Christmas is hectic but, as an all-out programme training three times a day, this is busier. It is hard - especially in the heat out here."
So how does Roy set about knowing what and how much kit to pack in the trunks and on the flight to Spain?
"What happens is that I speak to Glenn before and try and get a rough schedule of what we're going to be doing throughout the week.
"For example, they say to me we are flying out on Thursday and are going to do three sessions on Friday - an early morning run around the golf course, another session at 10.30am and another session in the evening.
"So I get an approximate idea of what we're doing and I can take out what I think we need kit-wise to cover any eventuality - like if they throw in an extra session.
"It sounds involved, but once you get your quantities right it is not too bad.
"I've actually bought with me a 150 training kits for the players and 60 kits for the staff. That will be alternated throughout the week, but on any one day I could have 120-odd kits go through the laundry."
Roy is confident that his best laid plans will not be scuppered by a mishap in the washing department?
"Over the years, what I have done is phone up prior to going to any training camp. You ring up, get hold of the powers that be and tell them what your requirements are.
"For example, I would say I am going to put 150 training kits in at midday and ask what time they would be back. You then work around that and providing they are on their mettle you don't really have a problem."
Pre-season training camp certainly amounts to much, much more than just fun in the sun for long-serving kit manager Roy Reyland.