We are a family of 6 and are in the final stages of getting our new Class A motor home. We are planning to take a 3 week trip next month and am looking for recommendations and things others have learned when taking a long trip. We live in MD and will be traveling to Calif then back. What are the must see places? Do I need to join any organizations or groups? We are first timers so any advise or recommendations are welcome! Thank you for your time and we are so looking forward to many adventures ahead.