Is it necessary to book tickets in advance for the Everest Base Camp?

Do tickets for Everest Base Camp need to be reserved in advance?
It’s best to make a reservation in advance. July and August are too busy and you won’t be able to make a day trip, so book your accommodation early.
It’s best to make a reservation in advance. July and August are too busy and you won’t be able to make a day trip, so book your accommodation early.