It might be tempting to use a channel other than 1, 6, or 11 — but remember that will then be the cause of interference (and everyone on 1, 6, and 11 will stomp on your throughput, anyway).
Having said that, many singles cruises include all of the standard amenities on board, as well as entry into all of the specific singles events handled by the host company.
A separate dining and socializing area will probably also be provided for all of the singles on the cruise as well, separate from the other guests on board.
As you’ve probably worked out, 14 lots of 20MHz is a lot more than 100MHz — and as a result, every 2.4GHz channel overlaps with at least two (but usually four) other channels (see diagram above).
And as you can probably imagine, using overlapping channels is bad — in fact, it’s the primary reason for poor throughput on your wireless network.
If you want maximum throughput and minimal interference, channels 1, 6, and 11 are your best choice.