Love this place. I’ll make this short but sweet.
I’ve been to the falls twice my self. The first time it was a typical Portland day,slight drizzle,mid spring when I ventured to the top of Multnomah Falls. Not difficult but not easy either. Basically a 5/10 on scale. The view on the other hand from the top was easily a 8 maybe a 9/10. Just makes you feel small, pretty cool.
The second time we only went to the bridge for some pictures. Both trips were great but if your gonna go only once I’d say make the trip to the top. It’s definitely worth it!