I have been doing the Med Diet, which this is based upon for several years. I never did a 10 day Wave as I didn't have an issue with sugar cravings.
The primary reason for the Wave 1 is to deal with those cravings. I don't think all of us get those so for some it may not be necessary. One other thing about Wave 1.. a lot of people seem to get a larger than normal loss during that time. Granted it may be water but for some people seeing that larger than normal loss is a big mental boost and we all know that the majority of this weight battle goes on between our ears.

so this is a help to them.
The main thing is to cut out the processed crap most of us are eating.. cookies, cakes, pretzels, chips, boxed rice/noodle mixes, hamburger helper.. well you get the idea.