While in Kathmandu short drive of half-hour to visit from one place to another interesting site, drive to Gorkha for 4-5 hours, and then the same for Pokhara. The longest overland journey will be from Pokhara to Lumbini for one day, but interesting as the country and climate change from high hills to the lower foothills of the Terai belt the flatland of Nepal.
Every place on tour beyond Kathmandu has electricity with hydropower and some places with personal solar power where guest can charge their electronic gadgets like cell phones, laptops,s, etc.
Certainly around Kathmandu and beyond at Gorkha, Pokhara, Lumbini, and at Chitwan also, where you will find banks and facilities for ATM or other credit cards to draw only local currencies.
Best hotels, lodges, and resorts as per the package tour cost, from the budget, standard to deluxe 5 star comforts available. All hotels and lodges with 24 hours room services running hot/cold water for shower and bathe with all attached bath and toilets with balcony and lounge to relax. The meals are served according to the hotel/lodge set menu of the day besides Kathmandu and Pokhara. Breakfast area large selection as well for lunch and dinner to choose from continental, Chinese, Indian or Nepalese foods with buffet banquet in some of the big hotels on tour.
Depending upon group size for minimum 2-3 people on private cars or four-wheeler, land-cruiser or similar. For more than 4 to 8 people on the comfortable couch, above 8 or 10 in Bus with comfortable seating, and space for leg rooms to stretch providing safe drinking waters for the whole journey only on drives.