Canadian Umpires Please Help

[gsf23]

Any of you Canadian Umpires out there that can give me a hand I would appreaciate it. I have been contacted by a couple of teams from Cananda that will be playing in a tournament here in the states. The question they have asked me is what are the rule differences between ASA and SPN (slow-pitch national)

The biggest I can tell so far is that SPN allows coutesy runners (3 per game), has a scoring line instead of plays at the plate, and I think the pitching requirements are a bit different. Is there anything else out there I should let these teams know about before they come and play. Thanks for any help.