Indeed, I wouldn't wear high heels, since hockey stadiums don't always have the most level of walking surfaces.

Besides that, though, definitely jeans and a WARM but of course cute top. And a jacket that you'll be cute/comfortable in throughout the game, if you end up needed to wear it the whole time.
"And politically correct is the worst term, not just because it’s dismissive, but because it narrows down the whole social justice spectrum to this idea that it’s about being polite instead of about dismantling the oppressive social structure of power.
Fun Fact: When you actively avoid being “PC,” you’re not being forward-thinking or unique. You’re buying into systems of oppression that have existed since before you were even born, and you’re keeping those systems in place."