Priority lounge? You mean the Souliga Lounge? As far as I know, you are not entitled to the Souliga Lounge through any airline program, but only with an AMEX black card, so you would have to pay unless you have the black card, but I think it is a good deal. I think the United gates are upstairs, but regardless they can't be too far from the gate, as it's not a big airport. The last I knew, they let you know when your plane was boarding anyway so you should have no problem getting to your gate.
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