Re: May I come visit your dojo?
Visiting other dojos is like a mini-seminar; those "hosting" are suddenly confronted with a whole new variable element in their midst, and the "visitor" is surrounded by complete unknowns. A true opportunity for everyone to really practice some blending.
Their loss for not welcoming your traveling student. For the record, what was your student's reaction, and did they eventually find a place to train while on the trip?