You can use Fast Pass to get "head of the line" privileges for 3 to 4 rides a day. Use that on the most popular rides, and it's no problem.
I also use a crowd calendar to plan my trip, so I go when it isn't as crowded.
Is their a website for this crowd calendar?
I’d like to go to Vegas knowing it’s not hip hop week.
Disney knowing it’s not gay week.
Virginia beach knowing it’s not black biker week.
Any beach town knowing it’s not flaming homo week.
etc...
Disney used to do first responders night once a year. Tickets were cheaper and they shut the park down at 5 and let the firefighters and police in. No lines for anything. You could ride everything 2 or 3 times by the time they closed at midnight. We used to take the kid every year and have a blast.
Not sure if they still do it though.