"Expectations from" is not a natural construction in this context.
3 Indicating the source or provenance of someone or something.
In this context, "from" would suggest that the act of travelling is the source of or has produced the good expectations.
As you note, an "expectation" relates to a future event, so the first sentence would only make sense if the travelling has already occurred and the expectations therefore relate to something else that's going to happen.
But this is not what you mean, since the alternative "good expectations for travelling" suggests that the travelling has not yet happened and the expectations relate to the (future) act of travelling itself.