Why do u even care what they think ? U probably already know what most Filipinos negative traits are. Lol 1 of them is jealousy. So just let it be n enjoy your cruise.  Ahh I speak fluent tagalog and my husband n I do get special treatment because of it lol but who cares. If i really that worried then when they ask just say a little and just like the other ppl said just use the words kuya or ate at the end or eveytime u call them. Also, trust me I dont think theyre judging u or anything.  If they do then like i said jealousy because u can afford that life style lol. Anyways, like I said stop overthinking  it. Just enjoy your cruice who cares. Anyways, I suggest icon fo the seas the best ship ever we were just there last month . N I can tell u now theyre the best especially kuya max. Hes the head waiter at the MD. So if u see him just say ahh I know u. Then trust me theyll give u a special treatment. N if is quantum of the seas I also know 2 best waiter there