I was sounding just like you Andie and I forgot to prepare myself. I was an absolute mess the first day. I cried and cried and cried. Don't forget to prepare yourself too darling. I didn't change Olivia's routine at all. I decided that I was paying a fortune for her to be there so they can work to her routine. I wrote out her routine for them to follow and we didn't have a problem. I did send a kit of Livvy's stuff with her first day for them to keep there including panadol, sudocreme, spare dummy and favourite drink cup. I also packed her a blankie from home so she had something from home with her in her cot. That way if Livvy needed something it was always there and I didn't have to remember to take things and bring them home again. I also brought Livvy a special bag that was especially for childcare so she knew what that bag was for. Look into getting labels as everything needs to be labelled. Just makes it much easier. You will find that the childcare centre will have an introdution program too.
Hope you and Cammie make the transition to childcare really well. Olivia loves it which does make it easier. Good luck.