I have generally found that all Disney drinks are well prepared. They tend to be not overly weak or strong. I have only drank beer at Raglan Road, so I can't speak specifically to that location, but the Disney bartenders are well trained and those are coveted positions.
I underestimated their drinks, thinking that they would be exceptionally weak. I had a Lapu Lapu at the Poly. I didn't read what was in it, I just wanted to drink something out of a pineapple. I figured that since it was in fact served in a pineapple that it would be a weak drink. I was throughly buzzed after that drink! It is STRONG! That plus a martini and I was beyond buzzed.
You can control the strength of your drink to a certain extent of course. You can always order doubles!