You are welcome to take part in any of the itineraries but if you need some downtime or want to do something else, though we try to include everything you want to do according to the plans, then you are more than welcome to do that. You can let the guide know ahead of time when you may be doing this, so they walk through the tour without waiting around for you and those who are with you to show up. Again, this is your tour and they want to make sure you are getting what you want out of it when you book, so yes, you can take some time to yourself if the itinerary is too much or doesn't have one of the things you want to do on it.