We are rather experienced cruisers and are itinerary driven.
Yes the regular balcony cabins are small. The bathrooms are even smaller BUT the itineraries are why we sail.
The unique itineraries, the overnights and the onboard ambiance are the lines strongest selling points.
We haven't been on Azamara since Covid but will be back onboard in the spring.
We also sail Oceania and the key to booking your first sailing is to find one of their preferred or connoisseur agents who can demystify the booking process. Oceania also sails R class ships with the same construction as Azamara plus two larger ships with a third type sailing in '23.
We've sailed other lines but not Viking. Viking has static itineraries, no children, and no casino.
You can take cruise line tours on Azamara and Oceania of course. We always research our ports and book independent excursions. In 35+ years of cruising we have only booked a handful of ships excursions. Because of the smaller passenger counts the A and O excursions tend to be for fewer passengers too.
Find a cruise travel agent who knows both lines. Book and enjoy......................