Overwhelmed

My fiance (25) and I (24) are attempting to plan a wedding on our own, and really do not have all this crazy money everyone wants. My dad passed when I was 16 and my mom has multiple sclerosis and is confined to a bed or chair. My fiance`s mom suffered a stroke which has left her in not very good walking condition. The reason I mention this is because I really want to have a beach wedding as I am located here in sunny central florida. But I obviously cannot have it directly on the beach. Any advice on that? We need help with everything, I dont really no where to start, its all very overwhelming. Any help is greatly appreciated.
Thank you for your time and consideration