How exciting! There is a tip sheet for each park in the library area here that might give you some starting points.
From my experience, the slowest line at Busch Gardens Williamsburg is DarKoaster and Reptilian and Tumbuli at Kings Dominion. Reptilian doesn't always open at park opening, but it is worth catching if it is open if you start your day in Jungle-X (Rapterra).
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Elizabeth Ringas, President
(she/her)
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