When you do, take some time in Split.
It is an amazing location. I suggest to do the football stuff during the day, then climb to Marjan mountain, overlooking the city and other nearby mountains and rejoice the sunset next to the big cross on top of the mountain. And then when scouting and walking has made you hungry, take a nice dinner on your way down from the hill in many of the restaurants with balconies that look over the city while lights are being turned on. After that, take a stroll down the mountain to nice promenade in city center, filled with life and lined with palm-trees.
I think such plan would get your friends also happy
.