Meeting with a sign at the Kyoto-Osaka transfer

I would like to clarify something with those who have used the GetTransfer service. I have lived in Osaka for about ten years, but I am originally from the Czech Republic. I haven’t seen my parents in a long time because we have a strained relationship. However, recently, my father called and said that he wanted to visit and see his grandchildren. I was a bit surprised, but we agreed to the visit. The only problem is that, when they arrive in Kyoto, I will be at a press conference and won’t be able to pick them up. I read that https://gettransfer.com/en/directions/japan/kyoto/populars/kyoto-to-osaka offers a pick-up service with a sign. Is that right? It would be great, as my father is elderly and has difficulty finding his way around a foreign city. Plus, he doesn’t speak Japanese. Has anyone used this service before? Can I arrange a comfortable trip for him? I’m worried that not everything will go well.