Well more then that. Windows on a SSD can boot up on two seconds. Game mostly singleplayer games will have way shorter loading times. And yes people who do alot of video editing and have to transfer files it helps with
Becase the HDD/SSD doesn't process graphics or anything. Only thing a SSD does is read/write files faster then a HDD
RAM is more then likely what you will need more of to handle more people in the park