Whiskey/cocacola routes take 7 days standard, at least in 2012 they both did. For good reasons, folks struggle with altitude and you have plenty of people who go up high first time in their lives, so taking time to acclimatize is smart for general groups. Even with this, success rate was not more than 50%.

I've personally struggled like hell on the top, almost hallucinated and so did rest of my team members. But we made a junior mistake of going too fast up on summit day. When I did ie Mont Damavand in Iran, which is just 250m lower after cca 3 years, no issues and roud trip was just 2 days. But I've trained and did some crazy stuff in between. Most folks don't do that kind of stuff.

Sure, but none of that is hard on watches.