Great choices. I am sure it will be wonderful. June is also the best possible time to visit weather wise (but you never know). Are you flying in/out to Bergen (I guess) or Oslo (I hope :-) ) ?

We did a similar trip many years ago before we moved to Norway and it was wonderful. In Flåm we stayed in Frethim where I remember we had a good Norwegian buffet dinner with all kinds of special food. Great opportunity to taste a lot of things, so you could check if they offer it at yours or the Fretheim hotel when you are there. A buffet like this is called a "koldtbord". I am sure it is planned already, but do take the Flåmsbanen train ride Flåm-Myrdal and back. It is pretty touristy, but beautiful nature, so well worth it. We chose the Alexandra Hotel in Loen to see the glacier instead of Walaker hotel which I have never stayed in but it looks wonderful! You could, however, take a detour to see the glacier if you have not experienced one before. You come really close and can feel the intense cold which is quite special. We were invited to a wedding at Union Øye back then as a friend of mine comes from the nearby village. It was a magic place and celebration and I am sure you will love it! In connection with the Union Øye stay, you should make sure to see Geiranger (preferably from a boat) which I am sure the hotel can arrange. You can also watch the movie "The Wave" before the trip to get a feel of the area and nature (unless you are scared since it is about a tsunami in the Geiranger fjord). Also of course drive Trollstigen when you stay at Juvet. It looks like you will have a great trip, but please ask if you are wondering about anything from what to eat and where to go!