Agreed. Automatic gratuities are set at $14.50 pp/pn (for reference DCL is $13.50 pp/pn) so for 4 people on what I presume is a 7 night you'd normally pay $406 in Junior Suites and below.
Granted, $400 is a drop in the bucket compared to what we pay for a cruise, but if you told me that someone else would pay that for me? Yes and please.