Surprising level of snark there, Caleb. You asked for advice and you got it.
I didn't detect racism in anyone's responses, just a reality orientation. I've been to Cancun and environs seven or eight times over the last decade, and I really like the area, and love the people. That said, it probably wouldn't occur to me to try camping, for the reasons listed fairly dispassionately above.
You might be able to find a spot (especially down the coast in the Riviera Maya) but it's entirely unclear to me what the usage restrictions are, and I know that in a lot of places the beaches are patrolled by the Federales. I also don't think the cautions about personal comfort and safety are misplaced. The overwhelming majority of Mexican nationals are warm, friendly people, but there are a few bad eggs who wouldn't hesitate to liberate any unattended personal effects (fortunately, the drug-related violence seems not to have spread to the northern Yucatan, so far anyway). The mosquitoes, once you get off the resorts where they spray daily, are legendary. And Nartreb isn't kidding about alligators and crocs... they're all over the brackish lagoons all along the Cancun peninsula and Riviera Maya.
If you're looking for adventure, you might consider going to the Yucatan but heading inland (toward Meridien, Chichen Itza, etc.) -- pretty sure you could stay very inexpensively at local hotels and mingle with the locals, enjoy "real" Mexican food, and get in some hang-time on a shoestring, without feeding excessively feeding the mosquitoes or forfeiting too much of the cash you were trying to save to either resorts or banditos.