Alex is organizing a game night and needs to set up tables and chairs. Each table can seat 4 players. He has 7 tables and 28 chairs. If he decides to use 3 tables for a different activity, how many players can he still accommodate? Additionally, if each game night snack costs $2 and he buys snacks for every player, how much will he spend on snacks? Let's think step by step and output the final answer within \boxed{}.
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