Depends on the amout of liquids before bedtime. Most times the cats wake me up during the night and then I might as well get up and use the bathroom!! Then the infamous wake up again about a 1/2 hr before the alarm is due to go off too.
I said 2, but really it's 1-2 times. Its a wonder I get any sleep, though. For instance last night - get up to drink water, get up to drink water, get up to pee, get up to clean up a hairball from the carpet (amazing how these things will wake you up), stay up for awhile to pet Tripod and make sure he's ok. Get up to drink water, get up to pee - a few minutes before the alarm clock goes off, get up to hit snooze...and then GET UP.
I chose none because my sleep goes pretty much undisturbed. Very occasionally I wake up once or if I'm awake I make sure I go before getting back to sleep - but there is not much that wakes me up
I wouldn't have to at all probably, but George bites me and wakes me up to go get him a snack once or twice during the night (his food /bowl is in my bathroom) . He's my baby boy .