The Leery's are sick when Dawson leaves his house but, later that night when they are at the yacht club they are fine.
Nobody thanks Joey or Pacey. Joey should be thanked for saving Jen & Pacey when she did exactly the same thing as Dawson. Pacey should be since he is the one who kept Jen & himself safe and alive in the middle of the storm. However, Dawson is the only one who gets any type of thanks or mention .
Early in the episode, Pacey indicates to Joey that he has received his first A. In fact, this is not true. Pacey received his first A back in Season 2 in the episode Sex, She Wrote in which he shows an A on a history test to Andie. This could mean that Pacey got his first A of the school year which has just started. As this is the 3rd episode of the season and just the 2nd episode where the kids have been in school it could be understood that it is the first A for Pacey of his senior year.
When the storm hits the Yacht Club, Andie takes charge and tells Mrs. Valentine to call Dawson's and Jen's families. However she forgets about Joey and Pacey, who are in equal trouble.