Adding water results in less floury biscuits, larger foam dinosaurs, and slides that won't give a shirtless cousin friction burn. Douse yourself in smooth-moving good times with today's Groupon: for $9, you get one admission to Chesapeake Beach Water Park (up to an $18 value). Locker rentals are available for $3 plus a $2 refundable deposit. After August 19, Chesapeake Beach is only open on weekends, so plan visits accordingly.

Chesapeake Beach Water Park defends families from the hot summer sun with flowing fountains, waterslides, a lagoon, and a kids' pool. The park's EMT-trained, certified lifeguards preside over a winding medley of pools and slides as patrons careen down twisted waterslides, either feet-first or in free inner tubes. Parents can relax in poolside lounge chairs while tots romp in the kids' activity pool or take refuge atop plastic alligators. Overheated guests can also be cooled down by breezes from the Chesapeake Bay that sweep through the water park and adjacent free parking lot.

Though Chesapeake Beach Water Park features a discounted price to Chesapeake Beach residents on Tuesdays, this Groupon still offers the most flexible deal available.