It would depend on the bank. Suburban bank with a drivethrough, or big urban megabank.
You'd also have to do a big investigation of the security measures of that specific bank to even know where to start.
Looks like Collins is your inside guy to tell you what they do
Things you might encounter though
-vault is closed right away on a time lock
-dye packs, decoys, marked bills, or tracking devices
-armed guards
-responsive police
-concealed carry permit holder
-How to evade
The elaborate movie heists sure are fun though. I think in the real world though, most meth-head bank robbers just go for the drawers.