Well, no. (1) It's pretty expensive once you take into account driving there, paying for parking, tickets, food, etc. First dates should be cheap and simple, in my opinion. (2) I'm stuck with you for three hours, and I can't really leave at my convenience if the date sucks. (3) It's probably hot and sunny. Am I sweating? Is the wind messing my hair up? Did I bring sunblock, and if so, when/where can I put it on? Will I smell like sunblock after that? Or maybe it's a night game so now I'm cold and cranky. (4) You splurge for nice seats. But now the date is even more expensive and I'd feel bad leaving you, that is if we drove separately. Or, we have crappy lawn seats and now I'm itchy and cranky. I think you get the picture.
But you are correct in saying that there is no cookie cutter method when it comes to relationships. Hence why dating websites/books and especially pre-med forums are bad sources of relationship advice.