Rest easy as Oceania takes very good care of you. You need to inform their Special Services department via phone prior to your cruise, then when you board, the Restaurant Manager will meet with you. At that time, you can set up with him your request for mid-meal confections (I’m a big chocolate chip cookie person) and he/she will also explain how you will receive a copy of the menu for the next night in your cabin every night. They know where you will be dining and will send the appropriate menu for that night. You can circle what you would like and they will make it gf for you. The only place this is not done is if you will be dining in the Terrace Cafe. I just ask to speak to the Chef for that venue and he comes out and will go along the buffet line and let me know what is gf that I can eat. Be sure to tell them you are Celiac not just gluten intolerant because that, of course is more serious!
Enjoy your cruise,
Billie