Originally Posted by
tothetrail
I'm not sure what you mean by "two subsequent flights later that day."
My reading of that was that the OP is arriving in SEA at 11am and there are two other AA flights arriving after the OP's flight but before the ship sails. That is, if the OP's flight gets canceled for whatever reason, the OP can still take one of the two later flights and still make the sailing.
In other words, it's a bit of insurance against missing the trip due to a canceled flight.
Still, given flight loads these days, it would still be wise to have a backup plan (or fly in the previous day). At least the OP is Gold, though, so she should be near the top of the standby list if she has to move to one of the later flights (though I'd personally feel much more secure about that backup option if I were EXP!
).