yes! But it would have to be a minimum hrs of sleep (like 4) I mean, if you're gonna take the time to pitch a tent, your gonna take some time to sleep in it! Who in reality would spend 20 minutes to put up a tent, sleep for 1 hr and then spend another 20 minutes taking it down.
Yes, i know it's a game - but it has some reality influences. Think mid-1800's Western America when they had thick, heavy canvas tents that took 2 men nearly an hr just putting the thing up (nearly impossible to do by oneself as the center stake would almost always fall over while securing the ends)
Not at all like today's light-weight nylon that take 5-20 minutes for 1 man to accomplish - but even in that context, who takes the time to pitch a tent and break it down in the same hr? How many Spaghetti Western have we seen with the cowpokers sleeping around a campfire under the open skies with not but a single wool poncho?
And since we're talking about energy recovery; why not gain 1 extra energy for every 15 minutes in prayer? I mean the Church is a place of solitude and insight.... With a simple program code change a resourceful player could then recover 7 points of energy per hr (assuming of course they keep queing up the prayers...)