Hi it all depends on the places you go some except it as being normal because no matter what men are going to get aroused,
in some places they do take offence to this and will (hopefully) politely ask you to leave, if they do then abide by this and find another place
but most places that accept nudists are aware of this and it goes unnoticed (so to speak) and it is OK,
I myself being a nudist get aroused at times not because of there being naked women around but because it is natural and just happens as there is no way to stop a man from getting aroused,
if you find yourself getting aroused then just let it happen and smile (like the cat that just ate the bird) and enjoy it but act like nothing is going on, and you will find that most other nudists wont even notice,
if you don't seem to find the places or nudists that accept this then keep looking for the ones that do accept it a great place to find many of them can be found at the site below (if you are at least 18)
hope this helps