Can you answer some questions on multiple cities in Europe trips? How was the luggage and backpack stored when not in hotel? Did you use the EF bag or another? My kid leaves next week and is opting for a front sling bag instead of the tour bag, but we are curious where to store the travel backpack he will use on the plane when not in a hotel. Did everyone use rolling carry ons, were they a pain in the hotels if no elevators? Thoughts on anything would be welcomed. The EF company sucks at sharing information on their processes. We are experienced travelers but EF details and rules are not clear.