1.Sectioned off workers are the best way to go, no matter how big the park is. However, they work better when the terrain is very unlevel and when the exit paths are more complex. Keep an eye on them, they tend to stray into the entrance lines. Hook them and drop them back into their areas when guests complain or when your park rating starts to drop dramatically., preferably right over the vomit spots.
2.The more guests you have the more workers you will need. Mechanics should not be sectioned off, unless it's an extremely busy area. Rides go unserviced and eventually blow up if you neglect to pick up 1 squre. Leaving them unsectioned makes them all available, plus it gives you a clue when to hire more. Avoid tortuous exit paths, mechanics get lost. Pick them up and drop them near exits to speed up repairs. He'll get another radio call after you move him, so don't panic if he walks away for about 5 seconds. Double drop him, in other words repeat the drop, and he gets a radio call immediately. Keep them busy, reset all inspection cycles to 10 minutes; This may require hiring an additional mechanic or 2.
3.The more guests you have the more sectioned off your handymen should be, and even more specific in their functions..
4.If you want to mow the lawns and water the plants have handymen to do just that and leave the other handymen to just clean the trash cans and mess that is on the ground.
5. The security guards will not stop all of the vandilism in the park so it a good thing to check every so oftern if stuff like trash cans and benches have been destroyed. This is especially true on the later levels.
6. The key here is that cleanliness and repair are good for park rating, because it makes people happy, which is 95% of the success path to beating any of these scenarios. There are only a handful of money scenarios, but even then, a clean park attracts more people and more money to build with.
7. Take advantage of new rides and long entrance Ques. If your entrance Ques are too short, people will walk away. Set your price low (about $1) and get 80 to 100 people in the Que, and then bump it up to $4 or $5 until the Que begins to empty and then drop back down to about $2. This is a quick, but legit, cash scheme. Some will walk away when they get to entrance, most will pay. However, this drains people's money fast, is bad for mouth to mouth publicity (listen to a few after you've done this), and makes them unhappy. Mix some cheap or free rides among the hefty ones.