tried royal caribbean spectrum of the seas , 4 days, SG-Pineng-phuket.
5 stars service, comfortable bed, good food at dining hall (ala-carte buffet), but so so for self-service buffet. Coffee, cannot. No taste. You can bring your 3in1 or pay for better quality coffee.

They have one night for solo traveler like you, to join a party, get along stuff, with other solo, single traveler.