The Retreat

The Retreat (forward Deck 11 - Observation Deck) provides a quiet, private spot for relaxing where you know you won't have to fight to get a lounger (see the Lido Pool), but it comes at a price.

Cabañas can be rented by the day or for the whole cruise. Prices in 2019 were $85 for a single day or around $37 per day if you purchased the whole cruise. They are doubtless higher now. I'll try to get current pricing and update it here.

But you do get a lot of pampering for the price. Stewards are available to get you beverages or anything you'd like from the Dive In or the Lido Market. You can choose to enjoy sunshine or shade, and at the top of the ship, the breezes will generally keep you comfortable and cool

One other bonus about The Retreat: it's adults only, so you don't have to worry about rugrats running wild and carrying on. That alone might be worth the price.