[t0mas88]

I did this with our early customer by offering to help in a few different ways. Especially if they are geographically a bit more distanced then you can tell them you would be happy to be there for 1 or 2 days to do multiple things, like run a few workshops, have a coffee with their manager and meet with IT (all three just examples). It isn't a very strange question to ask to use a spare desk in between those things.