Interesting question.... hmmmm.... we researched so much before we went that there were no real surprises in terms "I wish I'd know before we went". I'd have to agree with MJGirl. Comfortable walking shoes are a *must*. We, too, did the London/Paris Knights&Lights tour and we were glad for the comfy shoes. A few tips I can think of right now:
- plan ahead for what you'd like to do on your free time - just to make the most of your vacation time.
- if your tour has optional activities - do them! On the London/Paris tour, for example, there is/was an optional early morning guided walking tour of The Inns area, and I'm *so* glad we did not skip this for an extra hour's sleep!
- if you're going to Europe, be prepared for the high prices. It's just a really expensive place to visit (especially during high season).
- in the end, do your research. Understand what your tour is about. Learn something about the countries you'll be visiting. Make practical use of your free time. Above all, be prepared to enjoy yourself!