SkyJump Las Vegas, promoted as the world's highest controlled free fall, plunges the fearless 830 feet from the 108th floor of the Stratosphere Hotel & Casino at speeds of 40 mph. It officially opens Tuesday.

The thrill ride, which costs $99.99 (800-998-6937, skyjumplasvegas.com), is aiming for the Guinness World Record for "highest commercial decelerator descent" facility, currently held by Sky Jump at Macau Tower Convention and Entertainment Center. The Macau drop is 764.4 feet, Guinness says. SkyJump Las Vegas will be evaluated by Guinness to see if it deserves the crown.

Meanwhile, those who prefer more grounded pleasures — poolside with drink in hand — can drop into the giant REHAB party at the Hard Rock Hotel & Casino Las Vegas. The Sunday institution opens for a seventh season this weekend with a bash scheduled to include a performance by Wyclef Jean.

Thousands of partygoers are expected to swarm a 3-acre pool complex that includes stretches of sandy beach, palm trees, cabanas and swim-up blackjack. REHAB cover charges vary, but start at $50 this Sunday for men, $20 for women. Information: hardrockhotel.com or 702-693-5555.