and given that you are riding only two days, it should be straightforward to be able to plan out and print the route on diff pieces of paper, so you have a physical backup if you miss signs or whatever.
Without looking at your route specifically, the eurovelo route generally follows the river, and having the route on hand and looked at beforehand, and being simply observant , it really should not be an issue, just as if you were going somewehre by car and have to follow a map.