Staying in hotels will not make it easy to loose weight. Loosing 10 kg over such a short time with 60-80 km a day only will be tough in any case. It at least would require some discipline when it comes to food . When I am on tour for 3 weeks with more than 130 km per day and many height meters to climb every day, then I manage to loose approx. 3 kg, i.e. 1 kg per week. However, I am not keeping a diet during this time.