The blooms are dependent upon the weather, if the weather is warmer they bloom sooner, if it is colder they bloom later. The best bet is to get in touch with the Tulip Festival group as they have the best knowledge. I actually got in touch with them a few weeks ago and this is what they told me. I would also suggest going during the week if you can as it can get crazy on the weekend and as one poster already said, the police are VERY crazy about parking along the roadside, I saw about 11 people get tickets one day last year when I was there. I too would suggest La Conner for food, I HIGHLY recommend going to Seeds and getting the Cougar Gold Mac and Cheese, it is awesome. It is a great town and one my wife and I go to about a dozen times a year when we can get away from the city for a weekend.