There are many Europeans on Royal ships so I'm sure there will be plenty on the Quantum...not to mention how awesome to do a pre or post stay in the big Apple... The rates on Quantum will be high but I'm going to guess it will sail full or close to full on many sailings.
Explorer does well out of Bayonne and I have a feeling so will Quantum. New York/New Jersey ships are many times priced higher then those out of FL.
It was time for Royal to bring in a new ship to cruise out of Bayonne especially now with Breakaway there. I going to guess that Quantum will be in Bayonne for a long time.