I am looking for some suggestions on getting an international lounge pass membership for my parents. Since they are based out of US, domestic airline lounges are not useful for them. Their international (all leisure) travel is mostly to Europe and Asia. For US, I can always bring them in the lounge as guests on my AC membership or give them UA club passes. But I don't have any ideas on getting them access during international travel.

Benefits that would matter to them would be - comfort, food/drinks amenities, wifi... probably in that order. I have only used Priority Pass in past and that too only for domestic travel. Thoughts?

PS - they don't have airline/alliance loyalty and travel on deep discount tix for most part. So any airline affiliated membership will not be not useful to them.