This combination (morning + afternoon) trip was an excellent choice and would recommend that every visitor takes this to see the beautiful countryside of Holland. Only downside is that you may want to stay longer in each location in the Windmills tour than is allocated, but that is on individual preference. I saved some money purchasing in advance from Viator and would recommend it strongly.
Some advance info for travelers to Disney land.
1. Will take about 1 hour by train if you are in central Paris.
2. Hand luggage (rolling types you take with you on airlines) need to be stored outside the parks at a cost of about EUR 5 per item.
3. Summer time sees very long lines at the rides - average of 45 minutes wait, up to 75 minutes earlier in the morning, if you are planning to do both parks in the same day, it will be very tight, go to the Studio first, as they close at 7pm and then to the park, which closes at 11pm and has fireworks just before closing.