Great first day

I had a great first day back at ASC.  My boss was 100% okay with me subbing and letting her know my days.  It felt great to be back.  I walked in and she said "Welcome Home."  I was ecstatic to start the day.  My new coworkers are pretty cool, and there are a ton of kids.  I recognize about half of them, but do not remember names.  I am dead tired though.  I woke up at 4 am!  I wasn't feeling so great, and just stayed up.  My phone rang off the hook from 6-7:30 this morning.  It was good to feel needed, but I felt bad having to say no a bunch of times.  Thankfully it says I won't be available until Wednesday, so my phone won't be ringing much.