Is the programs' availability guaranteed?

No. You should contact-us in order to do a reservation; subsequently, we we'll check availability for the intended dates for all services involved (flights, hotels, guided tours, etc). We'll always look for similar alternatives or adjustments to the itinerary in case the service providers have no availability for a particular service, and we'll always keep you informed on the status. You should bear in mind that the sooner you make your reservation better are the odds of obtaining availability, especially in the flights.