Chances are great nothing will happen to your cues, as long as you pack them well.
The first time I went out for teams, my wife and I packed our cues and cases in a very large suitcase. Now with size restrictions I couldn't even use that case without being charged a scandalous "oversized bag" fee.
Earlier this year my sis and I went out for the Jack & Jack tourny. I stuck our cues and cases in a zipper dufflebag and locked the zipper down with a TSA approved lock, so no one but a TSA agent could open the lock.
To answer your question, yes there are bunches of vendors there that would love to sell you a cue.
The first time I went out for teams, my wife and I packed our cues and cases in a very large suitcase. Now with size restrictions I couldn't even use that case without being charged a scandalous "oversized bag" fee.
Earlier this year my sis and I went out for the Jack & Jack tourny. I stuck our cues and cases in a zipper dufflebag and locked the zipper down with a TSA approved lock, so no one but a TSA agent could open the lock.
To answer your question, yes there are bunches of vendors there that would love to sell you a cue.