Before my F Trip I phoned 'You First' regarding the arrival cabanas, which are some times referred to as 'Infinity bathroom'. I was told they were available but couldn't be booked. The guy wasn't sure what I meant, but phoned me back with the details.

When you arrived at the Arrivals lounge we did ask for ‘Infinity bathroom’ and were told they were available but take 15mins to run the bath. We weren’t in a rush but needed the refreshment so went with the standard showers.