C section question please help!

Holly
My C section is scheduled in 4 weeks at 7:30am, we have a 9 year old daughter and 6 year old son. They will be in school during the delivery. Should they come visit after school at 3pm to meet their baby sister for the first time or wait and come the day after?! I'm scared ill be to sleepy and drugged to remember and enjoy the visit or will it be fine and I should let them come the day off to see their sister before other visitors?