I'm curious where you got this info. We're part of the Levi's family and I've just looked and looked and can't find a single article that compares the weight of Levi's versus non-jean pants. Levi's vary in weight but are lighter than they were 100 years ago. Maybe take two pairs and weigh them? I sure find a difference.
When my spouse was working, they traveled 50% to 75% of the time, domestic and intl, first and second and third world. And never lost a bag. Once that I remember he had one delayed because HE had cut his connection too short. But that was it.
THIS^^^^^^^^^^^^^^^^^^^^^^^^^^^^
And we haven't been on Vista (yet?) but Terrace Cafe has had really, really good food. (Steak, lobster, etc.) so it's not like you're depriving yourself of some really good food. And a very attractive venue.