jmcquown wrote:

The only thing I suppose I'd worry about is mayonnaise
> due to the infusion of oil with eggs which may go rancid if left sitting out
> in 90F heat.

This is the only worry from mayo. And it isn't a safety issue, merely
a quality concern for the flavor. Rancidity isn't about potential harm
to you, merely that it won't smell and taste good.

Pastorio