For September 4th, without the passholder discount:
For six people, day resort admission to DC (no dolphin swim), plus 14 days unlimited admission to SeaWorld, Aquatica, and Busch Gardens: cost would be $1014 plus tax ($169 pp) for a grand total of $1079.91.
With the passholder discount:
1 annual pass to Busch Gardens = $119 plus tax
6 day resort admissions to DC = $414 ($69 pp) plus tax
5 additional admission to BG (two day tickets) via
Undercover Tourist = $379.75 taxes included
Grand total = $947.40 (will not include admission to SeaWorld and Aquatica)
Price difference is $132.51 (works out to $22.09 pp). For that money, I personally would opt for the tickets without the discount......and at least get the chance to visit SeaWorld at some point during your vacation (but its one of my favourite parks, so I'm admittedly biased!!!

).