I think it's just coincedence but we do sleep the same as my parents did growing up (and as his parents do too), I'm on the left he's on the right. Except for one year we had a waterbed and for some reason I was on the right.
If there are two beds in a hotel room, except for using one for nookie, we both take a bed to spread out (sorry to housekeeping!).
As to actual sleeping, I'm sort of half on my stomach, half on my side with my leg over a pillow and my bottom arm streched up under my head pillow. I also flip from side to side numerous times throughout the night, taking my leg pillow with me. DH hates it because I pull the covers off of him doing this manuvere.
We have a King size but even so, I went through a period a couple years ago where I was like Lurkette, squirming in my sleep. If I had any type of dream/nightmare where I was struggling, I would kick out and just
NAIL DH in the leg. He'd get so pissed (as I would) but there wasn't anything I could do about it. The guest bed got used alot for a few months
Ali