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What's more "summer" than a classic pool party? Splashing around in the water with friends, eating fun snacks all day, lounging out in the summer sun. What more can you ask for? 

If you're hosting a pool party this summer, we've got 21 must-haves to make your party the best time for your guests and yourself. Throwing any kind of party is a challenge in and of itself, but a pool party specifically is a whole ot…