Hi Tangerine
Great that you have a date for your surgery.
Re staying only the one night ... some patients may stay one night only - others may be in for 2 or 3 nights ...
I'd suggest you join the (private) Reconstruction Group here & put the quesiton to them, as they have 'been there, done that'.
Group: Choosing breast reconstruction | BCNA Online Network
I was in for the 1 night, but I only had a Lumpectomy & had no drains - plus I was from a rural area so had a 4hr drive to go home - so the surgeon suggested staying in overnight.
If I'd been local, I may well have been sent home the same day.
Take care & all the best for your surgery & ongoing treatment