V.
well N., here is what we did.
we got a gate which we put right outside the girls door (they're almost 2 and a half), we put them in their bed, we kiss them, they each get a stuffed animal and we say
ok talk to each other but stay in bed.
they go off to bed between 7:30 and 8, sometimes they talk until after 9 but they don't cry or attempt to go out of the room and eventually they fall asleep.
the thing that worked for us is we stopped going in their rooms to tell them to stop talking, and we stopped going in their rooms if there was whinning. so now they know it's bedtime and mommy daddy are sleeping. so they talk some, maybe sing, but they do not go out. it will take a few nights hope it works
V.
ps. we also have a nightlight on in their room, because one of the girls is afraid of the dark.