There are so many fitness classes, spa treatments and tennis tricks that it can be tempting never to leave the 45 rolling acres of Rancho Valencia. But if you do head out to explore, take to the skies for a hot-air balloon ride. Nearby Temecula and Del Mar send dozens of balloons up on clear days, and offers spectacular views of the mountains, Pacific ocean and San Diego sprawl. Due west, Del Mar and Solana Beach are laidback coastal towns with cute shops and classic California beaches. Bring boogie boards and surf gear if you want to take advantage of the waves. Or bet on winning horses at Del Mar's race track. Those who prefer golf clubs to a tennis racket should have no trouble finding a good place to tee off. Torrey Pines, Aviara and The Farms are all top-rated courses, and should pose a challenge for even the most confident golfers. Don't overpack: San Diego has excellent shopping for all types. Charming La Jolla has the best independent boutiques, and is an excellent place to stock up on kaftans, sandals and swimsuits. (Those who aren't interested in shopping should check out the coves, where seals often beach themselves for afternoon naps.) Further south, Fashion Valley is an outdoor promenade-style mall with all of the top shops, including Neiman Marcus, Nordstrom and an Apple Store. Even bargain hunters won't be disappointed. Carlsbad Premium Outlets® has well-discounted duds from retailers including Barneys, Ralph Lauren and Theory.