I attended a Christmas party with a priest recently. If I had asked and he had been so inclined, could I have made a confession and received valid absolution in, say, the guest bedroom?
Sure. Confessions ordinarily take place in churches, but it is possible that they can take place anywhere. In the case you describe though, it might be best not to impose upon the priest at a party unless there is a pressing necessity. A priest would be naturally reluctant to deny anyone confession and so probably would not tell you if he were not inclined to be pulled away from the party.
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