Groups of 10 people and more COME AND HAVE FUN TOGETHER From 10 people, it is mandatory to book before coming. This way you will be given a time slot, and will benefit from special rates.Duration : 3 hours on average. Nevertheless, you can do the courses as many times you like.Please check our Booking page to make your reservation.After validation, Ballon d’Alsace Aventure will send you a quote.REMINDER: For groups of 10 people and more, booking is mandatory.At the end of your tree top adventure, you may try some of our side activities (motorized zip-line, Acro-Bubble…) or have a break at our snack bar.Side activities have to be booked with the main reservation.quote Rates From 10 to 19 people : – 2€/person on your entrance ticket From 19 people : – 4€/person on your entrance ticket Groups of 10 people and more Reservation