FYI - not sure where on the east coast you are...and what the temps are, but we got a Mylar balloon last week for DS and just the temp fluctuation affected it ALOT. It was probably about 20 degrees outside.
So they filled it...it deflated quite a bit in the car, then sorta came back when we went in the house (about a 5 min drive from the store). But it just has drooped more than quickly than usual for a mylar.
Just want to give you the heads up about the weather. Not sure how the Hi-float will be affected with the weather.
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DS - Adopted by loving parents 1995
DS1 7/2009 ('Stachio)
DS2 9/2011 (Peanut)