I did it last year and overnighted my time at the lake as well. Well worth it and as some others said, it's not much to get to Snowbird Pass or to the toe of the glacier. Hiking on it, of course, would require more caution and the suggested training would be beneficial unless you have absolute trust in your friend and their knowledge, etc. I'd also recommend the walk up toward the cave and Toboggan Falls. The views from there are quite nice. Hargreaves Glacier was underwhelming in my opinion, so if that was a thought, you'd be missing very little.