After sailing with Royal Carribean 17 times we saw a South America itinary and chose the other side, Celebrity Infinity.
We used the pre cruise hotel and transfer that was great hotel and slick smooth transfer of approx. 1 hour 30 min.
On arrival there were orderly lines and clear instruction to leave luggage. A short walk to the pre boarding hall and booking in process. Plenty of seats, water and soft drinks and special signage for elite and above passengers.
Fine for us exactly what it should be. Under the swimming pool area so some noise