a few other points to consider: If not using
DCL insurance, and I would not recommend that, if all are not part of the immediate family, you may have to buy policies for each "group", especially if you live in different states. I could not put my DS & DN on my policy & have 1 b/c we live in different states.
Second: Preexisting conditions: Insurance is not refundable if youdecide to cancel the trip before final payment but if anyone is "sickly" in the group, it may be advisable to get insurance within the required # of days from first payment (some are 7 days, 14 days or 21 days). There is 1 company, CSA (maybe others), that cover preexisiting conditons if purchased by final payment (or something like that) but in my case, it was 2x the price of the pan I selected. All told, depends if you need the preexisting coverage. There are at least 2 good fairly recent threads on just this topic, just start scrolling back
third: when you buy your own insurance, age factors into it. I have not priced insurance for the 70 yr. old but when I took my parents (early 70's at tthe time), it was actually cheaper to get the cruiseline insurance than for me to buy on the outside (where it was much cheaper for me). It wasn't on DCL. BUT apparently DCL insurance does not cover preexisting conditions and as another poster pointed out, DCL insurance will not cover a precruise trip, only the cruise portion.
Fourth: you are comparing DCL with AAA. Most agents sell only 1 type whether that is the best one for you or not. You can compare insurances (likely AAA's also) on insuremytrip.com & there are other sites also (see some of the prexisiting conditions threads for great info. After a bit of research, the AAA policy might be best for you.