If there was ever a sign to take a vacation, this might be it — gas prices have fallen just in time for the holiday weekend. “I would expect that the slow decline we’ve seen in the last few weeks will continue through Memorial Day and perhaps longer,” said Patrick DeHaan, senior petroleum analyst for GasBuddy.com. “I would think that for much of the summer average gas prices in Georgia would be between $3.25 and $3.75.”