If it is merely seasonal allergies you should be fine. If you are under allergy immunotherapy (allergy shots) then you have to be completely finished with them one year before you would report as a cadet.
I agree with everyone else. It is not possible to say how much it weighs. It is surely a big accomplishment however, and given it appears on most class portraits for SAs it definitely holds some weight
Bandathlete157, congratulations on being accepted!!!! I too have been denied from the USAFA Summer Seminar. However, I would likely not have been able to attend anyway. SLE in my first choice by far, and I have been anxiously checking my emails every few hours since I first heard they were...