Times have changed! We've bought and sold a number of homes as we moved around the country. Every state is different but here are a few rules we've run into:
1. The Realtor CANNOT give you ANY information about the buyer and they should NOT give you info about the seller, if you are a buyer. PRIVACY laws now in effect.
2. IF you list with an Realtor, they will market the home for "list price." According to most contracts, YOU MUST ACCEPT the offer if it is for full asking price or more. If there are multiple offers, you have more leeway.
3. If you do NOT disclose everything they ask you to disclose - you can be sued. However, most owners that sell their own homes, usually (according to Realtors) talk too much and share WAY more information about the house than is necessary, putting buyers in a better position to negotiate.
However - you should be able to sell to whomever - IF you do NOT list with a Real Estate Agent, as a private sale but this makes it difficult to get to a buyer. You can market it on your own, using the online sites like Zillow but you will have no access to the MLS service. You can refuse to work with a Realtor OR if you sell it yourself, and a licensed Realtor brings you a buyer - you will have to "split" the commission with them, according to local laws.
To be honest, I'm not sure how you find out about all these laws. Ask the Town?? I've gotten this info from working with various Realtors over the years. We sold a house on our own once and but a Realtor was usually the best way for us to go. Good luck!