Azamara is a destination intensive line. Therefore the first sea day may not even happen - some itineraries have no sea days or alternatively the day is very late. There is also a view that whereas on mega ships a get together was needed, on Azamara it is very easy to connect with guests and a structured event is not needed. Add to that the range of venues available on a smaller vessel is not high - the cabaret lounge can be needed for rehearsals, there can be other groups that have formal arrangements with Azamara (eg Music at Sea) and now there is no library on one ship.
I guess Azamara now believe people can sort themselves out but they do offer one slot albeit usually at or just after sailaway. It has the same status as a Friends of Bill - space but no officers