this is difficult...Because if you are going to a special place in a bigger city with a lot fo right and left turns and maybe reroutings then you need more data form there server...It's really something you have to get a feeling about the costs during using that software....
But I have all the maps form europe with me...Hopefully I will find next time the Campanile better or the way back to Switzerland with this solution than with the ICN630 form Navman...You can ask Peter Rheingans about the trip back....
bye