Yes but its usually liptons tea, i take my own pg i am fuss.
I have just got back from 2 weeks on OV2 and they have Tetley teabags in all restaurants and in cabins plus Doewe Egbert coffee, sugar and milk. My husband is fussy about his tea but was perfectly happy with Tetley. They also have speciality teabags available in the restaurants which you can take for use in your cabin.
Have a great cruise. We did.