For the tour group, you might pay more expensive price for buy a tour ticket and spent more money than traveling by yourself, but it suitable for someone who has enough money and like comfortable traveling.
*spend
For the tour group you're going to have guides for take you to anywhere and they will tell and explain you about the detail of each place, so, you don't need to search the information of that place. And about the relaxing, tour group is comfortable than traveling alone, because you will get a luxury room for relaxing everyday, and good services all the time.