The southern tour itinerary is very comfortable, and the distance between stops is much shorter than in the northern part, so there is almost enough time to explore everywhere. It is very easy to find the tour guide at the meeting point. Mr. Guan's explanations were friendly and interesting, helping us better understand local Okinawan culture. The glass-bottom boat costs an additional 2000 yen, but the underwater views are incredibly clear and well worth recommending. Shopping is a choice between the OUTLET and iias; choosing iias means slightly less shopping time in order to pick up the OUTLET group on the way back, but you get a good ice cream discount coupon. The DMM aquarium is next to iias, and discounted tickets are also available. Since there are many interactive activities inside, it is totally fine to separate from the group and stay longer to explore and play. However, Senagajima island next is truly beautiful with the sunset, and if you get tired of walking, you can soak in the free foot bath to relax.