hi am planning to visit in mid nov, what would the weather be like and what sort of winter wear should i bring when i go hiking into caves and bicyling? may i also know if i can fo free n easy or must i join a tour as i am travelling with 4 teenagers? lastly what is the recommended hotel to stay in guilin and yangshuo? how many nights altogether should i plan for this visit? travelling on a budget so appreciate an itinerary if possible so i won't miss out anything fun to do with teenagers, many thnaks.