Is a 22 Month(son) allowed at Hospital after c-section?

Katie • 29 with 2 under 2. My boy Liam & my NewBorn girl Victoria
My second csection is scheduled for February 23rd.  This is the only option I have because I had cervical cancer and the scaring is so bad, I can't deliver vaginally.  My son with be 22 months when my daughter is born.  I am worried about the recovery with a child that runs everywhere, and if he will be allowed at the hospital during the days I'm admitted? He has only been away from me for a day, love him dearly.  Anyone that could relate please respond.  I also want my son to be first in family to meet his sister besides dad. We have been talking about the new baby a lot.