I woke up from surgery with a bra on over my dressings, not sure if that was because I also had a reduction.
Do you have a breast care nurse? She will arrange an after surgery care kit for you with a bra in it.
Target also has some nice soft after surgery bras that do up the front, yes, it within be easier to do up the front, especially if you have lymph nodes out, they were the sorest part for me.
I found wearing a bra, especially at night, helped keep everything in place and reduced any pain.