First I do a rough itinerary for the trip. Basically which park on which day. I start with one restaurant at a time - usually the hardest to get and will look at all the nights for our stay. If it is a hard ADR I just check for dinner instead of putting in a specific time. In most cases the first attempt is not successful (BOG) so I move on to the next restaurant. If it is not a hard to get ADR I look for the specific date/time I need. After only a week of trying I was able to secure a BOG res on our preferred night at 6:35. I also got Boma at 7:10 and Ohana breakfast for our preferred dates and times. This trip was easy. in 2012 I had to make reservations for several places and it kept checking several times a day until about two weeks before when I finally got everything I wanted. I prefer booking online because you have the option of checking whenever you want and don't have to worry about what time you need to call and having to wait. Good luck to you!