I started an endeavor to pay off the loans on the 3 real park scenarios a little over a year ago (my topic is still on this board) and today I finally finished it. I also paid off Sprightly Park's loan for what it's worth (250k)
Blackpool Pleasure Beach - 2M initial loan - completed at Year 18 http://i.imgur.com/GvEz3.png
Heide-Park - 4M initial loan - completed at Year 58 (screenshot is at 59) http://i.imgur.com/fpFEjjG.png
Alton Towers - 4.77M initial loan - completed at Year 80 http://i.imgur.com/sN78VkT.png
Now I can finally move on to RollerCoaster Tycoon 2, I just hope none of the scenarios there have these extreme loans or I may be tempted to do this all over again haha.
Yeah. "I'm going to turn back time an hour. It'll take about an hour." - AnnaBananaa