My friend was given a box of Vegas Robainas yesterday, still wrapped in cellophane. He likes different sizes and flavors of cigars so he usually buys them in small quantities and has never had an entire box before. How long will these stay fresh if the box isn't opened? His humidor is about a quarter full and he doesn't smoke very often so it will be a while before he's ready to move on to these. Also, does the unopened box require any precautions for storage? His humidor isn't large enough for it to fit inside. Thanks in advance.