This was from the Escape - I don't believe the Room Service menu has changed recently (or about to ...) to give you a general idea of what to expect.  Disclaimer - they are subject to change without notice and there could be variations unique or specific to the ship and region.     You can pretty much order as much as you wish, all for a $7.95 convenience fee ... breakfast is complimentary, between 6:30 and 10 am, unless you are ordering the 3 "hot" items.