Originally Posted by
Flyingeagle
I'm at a IAD United Club and was curious about this so went up to the Club agents and asked them and they said they have all attended class on this and you board in group 5 even if you are a 1K. It is part of the conditions of purchase.
Club agents are worthless for this sort of information.
Premier members who purchase Basic Economy tickets are subject to most of the Basic Economy restrictions. However, Premier members will receive the same boarding priority and carry-on allowance as they would receive when traveling on any other fare, and they're still eligible for the complimentary checked baggage allowance they receive with their Premier status.
Basic Economy FAQ