Yes, tea and coffee making facilities are provided in all cabins aboard Princess ships.
Contrary to the answer given already confirming that tea & coffee making facilities are always available on Princess ships - I can catagorically state that NO Princess line staterooms, including Owners suites, of which we have occupied on a number of occassions, have any such facilities. As far as I know, that is the case with all of the major cruise lines. In confined spaces to supply electric appliances that boil water is very dangerous. Princess, as with most of the lines, has a 24-hour room service and tea and coffee requests are happily attended too without fuss. On some Princess ships there is a 24-hour tea & coffee bar, where drinks can be aquired and taken to cabins.
As the ships have extensive kitchens most don't provide tea and coffee making facilities, you just phone your stateroom steward and he will bring either or both to you, or simply pop up to the nearest station where there are plenty of options tea/coffee/juices. I must confess my wife likes a coffee as soon as she wakes so we carry our own little kettle just enough to make one/two cups and with this we have a small jar of coffee and coffemate. Most ships will supply bottled water but some and the ones we have been with always supply you with a bucket of ice, so in the morning the ice has melted and yes you have guessed it we put that into the kettle and it saves you buying bottled water. We have been doing this now since around 1996 and wife is still healthy !!Most kettles work on 110/240v and usually all ships have the 110v option but more and more have one plug that gives you 240v and that way the kettle boils much faster.
The first answer is incorrect. Having travelled twice on the Sea Princess I can assure you that they do not have tea and coffee making facilities in their cabins. You can however make tea or coffee at the 24 hour tea and coffee bar and take your drink back to your cabin.
Regarding the answer by Simmons, maybe its not a major cruise line but Ocean Village had tea making facilities on it last year.
And by the way - is boiling a kettle more dangerous than smoking in a cabin ?
If tea and coffee making facilities are as important to you as they are to me. I suggest you try a P&O ship
Arcadia, Aurora, Oriana etc
I like to make myself a cup of coffee when I want it not wait 30 minutes for some poor overworked steward to bring it to my cabin
As far as I am aware P&O are the only cruise line to provide these facilities .