I ran into the same thing for my rear seat cupholder..... If it had been optional when I ordered it, rather than a standard feature, you better believe I would have chosen that option..... I was pretty unhappy to see that my boat didnt have it. Like you, it was a feature that I was really looking foreward to.
Check with your dealer to see if he can get it taken care of for you. My dealer (Castaway Marina) got it taken care of for me somehow. I am not sure if they got MC to cover it, or if they just purchased the kit themselves, and fixed me up.....
Awesome looking boat BTW. I love the color combo!!