iPad Air 3 wont turn on

This morning I used my iPad for a zoom call. It was working fine. After the call ended I left it where it was for about 30 minutes and when I came back to it it was off. I’ve been trying all day and can’t get it to turn back on.

I’ve tried

•every combination of the reset button sequence about 50x

•Tried multiple chargers

•tried plugging it into a MacBook (MacBook doesn’t even recognize anything has been plugged in) to do the iTunes/finder process

•let it charge for hours

•”burped” it

I have an appt with the apple store tomorrow but I’m wondering if anyone else had a similar experience and was able to get apple to fix it on the spot rather than replacing it or sending away for repairs.

I’m supposed to be studying for finals this weekend and I can’t figure out if my 10 weeks of notes from notability backed up or not 🙃

Also if you know of any other techniques to get it to turn on I’d greatly appreciate it.