Cupid Boy2 said: "For the shows you've listed, absolutely wait. The allocation of premium seats is often ridiculous this far out, and what you can get at regular prices is just not worthwhile in my opinion. As long as the show is not going to be a guaranteed sellout like Hello, Dolly this season, I have found that it's generally easier to get better seats closer to the date you'd like to go and at better prices.
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Hello, Dolly is on my list, but I definitely bought tickets to it as well as The Great Comet and Dear Evan Hansen. All three of those had the most "hype" in my opinion, so I decided to purchase those tickets.