You should contact your own automobile insurance company to assist you in having your car repaired. Oftentimes, the insurance company will pay for the necessary repairs and then seek subrogation from the negligent parties insurance company. If you take this route, you will have to pay any applicable deductible, but your insurance company will usually seek to have your deductible reimbursed as well. You could file a small claims case against the negligent driver, but if the driver does not...
Your renter's insurance company has probably obtained all of the medical records related to the plaintiffs' injuries. You should be able to get a copy of your file from the insurance company, or the attorneys retained by the insurance company. However, your best plan may be to retain personal counsel to help insure that the insurance company protects your interests when they are resolving the claims against you.
You may be able to file a suit against the cashier if you were injured by being exposed to her blood. Getting tested immediately to determine if you have been exposed to any harmful infection is of primary importance. After you determine if you have been physically injured as a result of the exposure, you may want to consider a claim against the cashier, and/or the business. The business may be liable for the actions of the employee under certain circumstances. First step is getting tested...
Results of testing related to psychiatric treatment and HIV status are generally protected, so your husband should not be required to execute documents which disclose that information.
Generally, the person who was intoxicated at the bar does not have the right to file a claim against the bar owner. Claims against the bar are usually limited to third parties who are injured by an intoxicated driver who was provided alcohol by the bar.