Tube life / Replacement Question -Capitole MK II.

I've owned my MKII for about a month now, with zero problems, and I love it. But I have a question. I notice, that when I have the unit in Standby, the tubes are still on. The expected tube life is 10,000 hours (roughly 14 months). Shouldn't the tubes be off in standby to preserve tube life? If the answer is to shut off the whole player - wouldn't it would take many hours to warm-up the player again from a cold start?
If a tube goes bad, how do you replace it? Isn't it hard wired into the circuit (ie, no tube socket)? And, no, I am not a technician, so I wouldn't trust myself with a soldering iron in my hands, working on a piece that retails for $8700 (U.S.). Anyone got any knowledge / advise? (Oh, and one last thing, I have no local dealer to go to).