In case you were worried about the bag...

It was returned to us just a few days later.

At the airport, I called Bellagio and filed a missing item report, but they didn't find it. However, Rachel remembered the name of the cab driver and Dad remembered the cab company, and we were able to get it back through them (though the lady fussed at Dad for referring to it as a "camera bag," insisting that it was a fanny pack - then started telling him how she couldn't ship him the apple!). It arrived just a few days later with everything inside bubble-wrapped. We were quite lucky.