Absolutely! I pictured the moment the words "traps untended" coming out of the wizard's mouth, the player's trying to bind and gag them since they would not know there wasn't much treasure. I imagined them meeting the wizard privately, but there's nothing stopping the wizard from meeting them in a public place where they'd be less likely to be attacked too.
I also forgot to mention, but I really loved the name "Dodacehedron Games & Misadventures" - the misadventures part is very charming.
Good point about the map, I'm sorry to hear about your visual impairment and you certainly did a great job regardless. Since players would have the map, it wouldn't be necessary to hide any information for the GM's eyes only. I think I didn't do the best job explaining what I meant, so I tried to put together an example: