I have no reason to follow the Euro/dollar exchange. With that being said - my wife, daughter, son-in-law, and granddaughter just traveled to Spain for vacation.
It cost my wife $580 US to get 500 Euros ! So much for the strength of the dollar. With the government printing presses running 24/7 due to the government's attempt to hold down inflation what we are now experiencing is certainly predictable. At a time in my life when I can loan money TO the bank, interest rates on deposits are laughably and depressingly low.
Well, not to say that our (US) finanical policy is any way sound, but actually the US dollar has been gaining heavily against the Euro over the last year. The Euro has lost significant value and is now trading at the same rate in USD it was 10 years ago. The problem the EU has is that while some of the member states, like Germany, have a pretty sound fiscal policy and more or less refuse to go into debt. On the other hand, they have members like Spain and Greece, who spend money like drunken sailors. It's taken a heavy toll on their currency value.
So, my point is, this is actually probably one of the cheapest times to visit Europe in the last decade. Looks like your family went over at a pretty good time.