My husband turned the big four-oh in January, so I had arranged a surprise trip to Las Vegas in April for his birthday. We traveled with another couple (and no kids [!], although we did see plenty of families with kids while we were there). We flew nonstop out of Philly on Southwest the Sunday before Easter. I love, love, love Southwest - I wish they flew everywhere! The flight was uneventful and before we knew it, we were landing at McCarran International Airport, where