Skyhawk, with kids you don't want the sun on them directly - gets too hot, when they get hot, they complain, which makes driving a lot less enjoyable.
I noticed the vehicle cools down a lot faster in the summer with the tint - I had no tint for about a month before I found a tint place with good prices and a good reputation.
Hint: If the name of the place is "Hollywood Sound" then tinting windows is probably not their primary business.
Any of the major chains (Ziebart, etc) will have lifetime warranty on fading, peeling, cracking, bubbling, etc.
One thing - I was warned by the installer NOT to use any ammonia based window cleaner.