What does a BE boarding pass for a MP gold/plat look like? Does it say both GROUP 1 as well as BASIC ECONOMY on it?

And does a Gold/Plat on an intl itinerary still get United Club access?

Relatedly, has any one here with status ever tried to change from one economy seat to another economy seat (either + or -) on a BE ticket with an airport agent, and gotten declined? I know there's a lot of successes in changing seats reported in this thread, so just wondering if anyone tried and failed.