Перевести на английский:"Конечно экскурсия займет много времени, но поверте вы не пожалеете, что побывали в Лондоне
trip will take a lot of time, but believe me you will not regret that visited London
Certainly trip will take a lot of time, but believe me you will not regret that visited London
Course tour will take a lot of time, but believe you will not regret that visited in London