It depends on the plane. I have flown on planes where business class is on two levels, and I always requested an upper level seat. You only see the other folks there and have no idea how many other people are on the plane. It is like being on a private plane <snip>
We have flown United Polaris, and for boarding there is a forward portal only for Polaris passengers. Everyone else uses a portal behind the Polaris section. You only see the other people when exiting the plane, as they use both portals to exit everyone. In Polaris you are in your own "pod", and it is so comfortable I want to board early and spend as much time as possible in it
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