Hot Air Balloons

Hi all,
What’s your thoughts on flying near hot air balloons?
I’m flying to capture something else and not to specifically film them (though it would make some nice footage)
I’m thinking Drone Code and if I make sure I’m up wind from them it shouldn’t be an issue :man_shrugging: I reckon I’ll be a minimum of a good few hundred metres away also but possibly be within their NOTAM?