I have never been somewhere so densely packed as well, I'm guessing the fact 40% of the runs weren't open didn't help, but the trip to Lake Tahoe 3 weeks later was polar opposite, literally could go down runs and see only 2/3 other people and were so wide in comparison.
Wow you guys need to stop spending money on expensive kit and invest in some lessons. I'm sorry to be so harsh but that snowboarding was horrible. And dangerous. I didn't see a single carved turn or 'jump' landed. I don't want to piss on anybodies stoke but you'll enjoy it even more and be safer once your technique improves.