I can't disagree with the concern.
Pinnacles are making out on this deal. Conversely, Elite and Elite plus taking a Royal cruise are gaining FAR more than a Diamond or Diamond plus taking an X trip.
We used our phone to unlock the stateroom door on Odyssey in March (as well as control the lighting and curtains)
I believe (just opinion) that the fact one had to turn over their WOW band to a roaming waiter, was one of the major downfalls of the system and why it never caught on as Royal hoped it would. The failure by the cruise-line to invest in RFID reader POS handhelds doomed the program.
Although I have never sailed Princess; their Medallion program seems to have set the benchmark for cruise wearables.
I used luggage Valet fro Port Everglades in March, loved it, worked great.
We had an American Airlines flight departing @ 1115. We don't pay luggage fees, and Royal was even able to make sure there were no charges incurred.