Yes but it's depending on season and location of the store so calling or checking online first would always be a good idea
Each store is different.
Yes however this late in the season they may have limited sizes available. It's probably best to look online and see if the store has three ones you want in stock, you may be able to call and order as well and they'll ship them for free right to your house!
Yes
Yes, but each store might carry a different style or brand.
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