But I think there should be some caution since Snowden was an intelligence officer for the USA. The spying thing can be complicated so it's probably a good thing to stay safe and not let Snowden see too much.
My cousin was CIA. Shortly after he retired he was in an "accident" which left him brain-damaged. He used to speak fluent Russian, but recently I tried to speak with him in Russian and he could no longer put a sentence together. Trust me on this: Snowden will NEVER be safe from US authorities.

My suggestion for Snowden before he goes "sight-seeing" would be to find a really good plastic surgeon.