We are Williamsburg Busch Platinum passholders, which means our family has access to all 8 Anheiser Busch parks. Next month, we'll be taking my 77 year old M-I-L and will want to do 2 days at Seaworld and one at Busch Gdns Tampa. Any recommendations on the best pass to purchase? We are Canadians if that makes any difference. Many thanks!