• 130 cm minimum height for the tree obstacles (130 kg maximum), and every minor needs an adult along, a parent or an instructor
• Sneakers and a normal-length T-shirt, since the harness sits across the waist, so skip crop tops
• Last entry an hour early: entry closes an hour before the park does, and the course takes about 45 minutes

Avantura Park is a treetop rope course among the oldest stand of trees on Ada Ciganlija, on the car-free side of the island facing Novi Beograd. Kids clip into a harness and cross obstacles strung 4 to 8 meters up, after a safety briefing from the instructors. A loop takes about 45 minutes, the trees give thick shade in summer, and the beach is 50 meters away.