some insights into Flam

We made a mistake and did book a non-refundable one-night stay in Flam at the Fretheim. It is expensive so we cannot cancel it unfortunateky :( we arrive at 6 pm - stay overnight - next morning have a 2 hour cruise and 20 mins shuttle back and then the entire day in Flam till about 7 pm -- any recos for where we can eat (vegetarian if possible), short hike/ walk, esp for our 2.5 year old kid. I get it is a tourist trap and we did get "trapped" but now that we will be there in a couple of weeks, any ideas would be great! Thanks a ton