Hi Chris,
I don't know if you were following the threads on "going Dutch" at the start of 2007, but:
1. The law in Holland requires you to have the breakaway cable directly attached to a fixed point on the car tow-bar - it must NOT be looped around the tow-ball
Car / caravans arriving at Europoort and Hoek van Holland are checked for compliance - and on the spot fines of Euro 30
2. The towing speed limit in Holland is 80 kph (50mph) - but that's generally not a problem around Rotterdam - the motorway network is usually speed controlled to 100 kph or 80 kph
3. Delftsehout is in a recreation park on the outskirts of Delft - bus to the train station from outside the campsite or an easy walk of 10 or 15 minutes
4. Enjoy your time in Holland - Delft is a bit touristy, but quite vibrant and fun.
5. Don't forget your bicycles.
6. Other places to try - Amsterdam (by train), Rotterdam (by train), Brielle (beautiful old walled town south of the Europoort) - it's where I live when in Holland and has some great restaurants, and south from Brielle down the coast road (N57) over the top of the dykes and sea barrier.
If there's anything you need, let me know and I'll try to pick up some information for you.
Robert