Now there's a new one on me! :ggrin:
I've never heard of a rental company that rents ping pong tables. Best bet is to check Hargray's Yellow Pages at:
Another option is to buy a table from wal-mart online and have it shipped to the local store for pickup. Here's one for $150.
When your trip is over, donate it to one of the local charity thrift shops and take a tax deduction. I'm sure they will come pick it up and give you a tax receipt.