Start your bachelor party at one of Bangkok's many rooftop bars. Head over to Khao San Road, known for its vibrant nightlife, bustling streets and busy bars. Party all night at Onyx, a famous nightclub, with good music and an eclectic crowd.
Take a day trip to Ayutthaya, an ancient city declared a UNESCO World Heritage Site, to explore the ruins of the former capital of Thailand. Visit Wat Phra Si Sanphet and Wat Mahathat Temples and admire the intricate architecture along the way.
Start your day with a visit to Kuta Beach, Bali's most famous and laid-back spot. Take a surf lesson or just soak up the sun. In the evening head over to Potato Head Beach Club, a luxurious beachfront venue with a great atmosphere and drinks. Spend the night partying at Sky Garden, Bali's most popular nightclub.
Visit Ubud and explore the verdant rice terraces which Bali is famous. Take a guided tour of the Ubud Monkey Forest and get up close and personal with Bali's cheeky inhabitants. In the evening, enjoy a traditional Kecak dance at Pura Taman Saraswati or watch a film at Paradiso Ubud.
Take a boat to Nusa Penida Island and spend the day island hopping to Kelingking Beach, Pasih Uug, Angel's Billabong and Broken Beach. These spots offer picturesque views and opportunities to cliff-jump and swim with manta rays. Get a glimpse of the island's majestic temples such as Pura Goa Giri Putri, before heading back Bali.
Take a refreshing swing at the Bali Swing adrenaline park situated amidst the lush green rainforest. Soak in natural mineral hot springs at Tegal Wangi Beach and indulge in a relaxing massage at the Lembah Spa. In the evening head over to La Favela Bali for some bites and drinks before your flight back home.
If you have more time, explore the White Temple in Chiang Rai, Thailand, or hike up Mount Batur in Bali. If you have less time, skip Ayutthaya and head directly to Khao San Road or Potato Head Beach Club. Pack for warm and humid weather, and also for beach and party attire. Make sure to have cash on hand since some places do not accept credit cards.