Can I get Florida divorce based on Cruelty and Desertion

Mr. Cabanas is correct. Florida is a no fault state, so you do not need to base a divorce on cruelty or desertion.

Will I get child support if my husband and I share kids 50/50

There is no way to answer that question without knowing the financial situation. 50/50 does not necessarily mean that there is no child support.

How can I relocate children in Florida with kids?

You have to comply with the requirements of Section 61.13001, Florida Statutes and pursue a Petition to Relocate.

Can son's ex-girlfriend deny visitation to the grandparents ?

Grandparents do not have visitation rights in Florida. If your son has court ordered time sharing, then he would be able to allow you to seem them...

Can you have a case dismissed you are not a party to?

No, you would not be able to have their case dismissed.

Fraudulent Child Support

The Court can order child support without the parties getting divorced pursuant to Florida Statutes.

If I filed a petition to modify time sharing and child support, can I still be held in contempt?

Filing a petition to modify does not protect you from contempt. The Court could still find that you had the ability to pay the previously court...

It doesn't sound like you have a viable claim considering your divorce was finalized 5 1/2 years ago.

Do I have to respond to a response to a motion I filed?

You do not have to file a reply to her response in opposition to your motion.

At what age can a child decide to see her grandparents

Unfortunately, your granddaughter can't choose to see you until she's 18. There is no grandparent visitation in Florida.