No Umbrellas when raining
That's why it's a good idea to set up consession stands around the park. Have a good balance of everything.
Entrance & Ride Fees
Be careful not to charge too much on rides. For a merry-go-round it should be from $0.50 to a $1.00. A roller coaster should be about $1.00 to $5.00. At first your park should have an entrance fee of about $4.00. As time goes buy keep increasing it little by little. The maximum amount I would have would be $25.00.
Broken Down Rides
Be sure hire plenty of mechanics to fix the rides once they've broken down.
Litter and Cleanness
Be sure to hire plenty of handymen to keep litter off the ground and mow the grass.
Theft
Be sure to hire a few security gaurds to make sure there's no stolen property.
Boredom
Hire a few entertainers to shake away boredom when waiting in a line.
Intense Rides
When nobody is going on you're ride, and their thoughts read,"The ______ looks too intense for me." then you need to make it less intense. You may have some really fast turns or very steep drops. Loosin up the turns by making the perimeter wider. Also if you have a really tall steep drop. It has to gradually form into a steep drop and gradually level out. Here are some examples:
This is Correct This is Wrong
This is Correct This is Wrong