There's also nothing RAW dealing with not sleeping for 2 weeks straight, so take from that what you will (i.e., DMs need to make some stuff up...the books don't have all the answers).
Yes, I have.Has anyone ever slept in armor? How does it feel? (This is an honest question, as I really have no idea how bad it is.) Any gamers who were servicemen slept in the body armor with the inserts?
In other words, you force heavy armor users to fight night ambushes at a severe disadvantage (compared to what's intended).I would say wearing heavy armor is not relaxing, therefore you don't gain the benifits of an extended rest. That's my opinion.
Do you have any idea of how many adventures where this simply isn't an option?Rest in safe places.
Good advice.Encounters indeed are BALANCED based on the thought that heavily armored characters will be wearing their armor, so be aware of that!
On the other hand, if you keep an eye on the effects this will have, by all means run encounters where the party isn't totally suited up for it. Just really, really be aware of the consequences (maybe have the encounter be a bit less challenging in Level so the deficiency is offset a little?)
In short, having to fight nighttime ambushes without your heavy armor sucks badly and will likely reduce the fun.
I have played many adventures in the past with characters less than optimally armed and armoured (such as after been captured, attending a ball, sleeping, ambushed). 4e doesn't make it any different
I hope that was helpful.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.