My dughter just turned two and like pposter she also feel that the kids are here to play and asks for them on the weekends. She does have her days where if I'm giving a hug to one because they fell or are missing their mommy - she will then climb into my lap. She's not normally jealous, doens't act this way when I hold babies but like I said its only a few days here & there.
My own kid is the one that doesn't sleep the full "nap time" so when she's up and the others are sleeping we colour or watch a tv episode that she really likes together. Evenings are just her....SOME days she will go into to daycare to play but mostly she stay with us then we have our special routine for bath, story & bed.
I think she's coping well - she's adjusted so well and hasn't had any issues.....daycare has even encouraged her to potty train - she wants to be a big girl too! lol

Good Luck hun.....