2nd showing of Fantasmic/ Fireworks

I have my heart set on viewing the fireworks from Its a Small World then staying for the snowfall after. Will it be completely unrealistic of me to try to get a half way decent spot to view the 2nd showing of Fantasmic after making the trek to Rivers of America? I don't have a Fantasmic dining package. I only have one day at Disney and these are both on my bucket list.