i also sleep-walk before. but i don't consider it as sleepwalking because it usually happens when i am very very tired.
e.g 1 night never sleep, get home just sleep on the bed. when my gf ask me to do something like go to the table and take the remote to off air-con, i will go. then i will go back sleep.
however, when i really wake up the second round, i have zero recall of myself getting up and take the remote.
other times is i remember myself sleeping in the room, but when i wake up, i'm sleeping on the living room sofa. my gf say i in the middle of the night walk there by myself, but i totally could not recall this event happening
and it happens a few times already..