A simple, classic & tasty pasta salad from my childhood that was a standby whenever we "cooked out". The tangy, salty flavor is a nice counterpoint to the sweet and smoky richness of barbecued ribs or chicken.
I would suggest tasting the dressing before adding the macaroni and veggies. If it's almost *too* salty/vinegary, then it will be perfect with the pasta.
Also, while it can be made ahead and chilled, be aware that the pasta will absorb and damp down a lot of the flavor in the process, so if it's been chilled a while, taste and correct seasoning if needed.