https://www.cruisewatch.com/top-10/ships-passenger-crew-rati...
EDIT: But we can do better than that! The Oasis-class of ships are the only ones with a ~6600 passenger capacity, and they of course all have wikipedia pages [1]. And that lists the crew at 2200, for a ratio of 0.33.
0: https://www.cruisewatch.com/cruise-ships/caribbean-princess/...
Harmony of the Seas can handle almost 5500 passengers and 2400 crew.
How many meals does the average tech employee eat at work per day? My initial guess would be around 1.5, with the biggest meal of the day, dinner, usually being eaten outside of work. That would mean google spends more than twice as much per meal than cruises do.