Hi there. I can't say what is 'best' but I can let you know my experience. I booked the tail coaster when I went in December 2021, Therefore, we spent the day at Adrenaline Beach. We loved the location: Near the floating bar if you like that, not far from buffet area, had loungers with umbrellas that did not get filled up as fast as on Coco Cay, and swings in the water. But be warned, the water has rocks. It is easy to stub your toes if not wearing water shoes. Now this is our go-to area whether I do the tail coaster or not.
The tail coaster will take you less than 15 minutes. I was able to bring my husband on my first ride as the 'free guest'. He was one and done, lol!