Suzie,
I'm following the full fast program which is 4 shakes, 1 oatmeal and 1 soup, every day.
I'll be honest, it sure ain't a McDonald's combo, or a Pizza Hut cheese crust pizza, BUT.... the program is designed to make you lose weight, not provoke a party in your mouth like those fast foods
Hmmm what I'm trying to say is that the food is, for a VLCD diet, pretty palatable, compared to my GF's past experiences with VLCDs. However, you can't expect the shakes to taste like those sweet-full drinks you get at restaurants.
Good news, though, is, when you progress through the program, you get tricks on making your food better (right qty of water, times in nuke box, ice qty in shakes, etc), and you develop your nose sense. You'll begin to smell those veggies, and actually develop a taste for them.
I guess it's part of the mental diet