I've taken a snake to my local Petco's Reptile Rally "meet & greet" in the past several times (not a retic, but a large BCI & a 7' Florida rat snake, etc), they don't seem
to notice the scents of any potential prey in the store, they've always behaved perfectly, meeting strangers of all ages. Don't recall seeing a retic there, but someone
had a burm & various other snakes too. I've worried some about the chance of picking up mites from doing this though, so I don't always attend.