Excerpt from The Point Guy article about booking a Disney Cruise:

We used the Cruise Compete website to start our cruise search, as that was an easy way to quickly compare multiple quotes with one request. It isn’t all about price with a cruise — it’s also about the stateroom credits and other perks that can amount to hundreds of dollars in value. Our decisions quickly came down to booking via Costco Travel or Small World Vacations. While we would have gotten a larger total credit (in the form of a Costco gift card) via Costco, I went with Small World Vacations this time, purely based on recommendations by friends.