Visiting advice?

Hello friends, my second anniversary is coming up in early April and my fiancee and I have had some great moments in snowy situations. I am considering taking us to Fairbanks or Anchorage, but I only have the weekend to spend in either.

We are in our 20s and enjoy some light hiking as well as some night life.

We are flying from Seattle so cost seems to be similar for both in these virus times...

She's really interested in the northern lights (point for Fairbanks).

I'm really open to thoughts here. Or is there a third affordable location I should be looking at?