Can I change my daughters last name without her bio fathers consent if i have Sole legal and Sole Physical custody ....?

You will need to serve him with your petition, to allow an opportunity to be heard.

If I amend the complaint and serve documents before there is a Answer served will the Amended Complaint stand?

No

Attorney agreed to pending arbitration for fees but has just threatened formal collections proceeding via another lawyer.

Probably not and the other attorney may be in violation of the Fair Debt Collection Act. You may want to consult with an attorney regarding this...

Roach in Food at a famous pancake restaurant!

Yes consult with an attorney - save everything including your food receipt

Do I have a case? Should I go after these guys.

Yes consult with an attorney immediately - evidence will need to be preserved and there will be a waiver issue to address.

I lost my baby , and develop a skin diseases all while on the depo provera, do I have a lawsuit?

You will need to research on the internet for attorneys handling these matters. Sometimes the statute of limitations gets extended legislatively.

contact a personal injury attorney in your area to review the viability of your claims

Car accident-each having a witness, conflicting who is at fault. Given a ticket weeks later. PleadNot guilty open to civil suit?

Yes regardless of what happens on the ticket the other party can pursue you in civil court. therefor turn everything over to your insurance...

My car was hit while parked by a drunk driver who took off and left his vehicle,

go through your own insurance to fix your car and let them chase down the other to recover their expense and your deductible

Person threatening to sue me.

nothing to do except keep your insurance apprised of any developments.