I had the actuators replaced in the doors because the locks quit working, and since then the key no longer works to unlock the doors (This was months ago, and I'm just now noticing). The fob still works, so this isn't the end of the world, but I'll need the key if I ever need to put it in the...
I'm 6'1" and I sleep in my '07 Sport every time I go camping. Can I stretch out completely? No. But I wouldn't say it's uncomfortable. If you don't mind your feet kicking the rear hatch or sleeping a little diagonal, you'll be fine.