At that price I think I'd save up a bit more and get a fishing chair/bed - a lot more comfortable and warm than an airbed. And won't leak in the middle of the night!
We too are robust and had the old blue & red rubber inflatable mattress for years til it finally retired. After much research bought Aerobeds, very sturdy, has a cordless pump you charge at home, we can get 2 singles in a 3 person tent! Very comfy (we argue about who gets one when visiting in laws) Paid around £80 each but worth it. Also agree with fishing bed idea, we have 2, almost as big as single bed, put fitted sheet on & quilt = spare bed. Warmer as well off the floor.
------------- better a rainy day up a hill than a sunny one in the office
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets