We have used them on our solid oak floors (not pr-efinished) and have had no problems, it's actually quite cute and hilarious to watch them in our cold Chicago winter :) These have never been used outside, so we weren't concerned. After we can use them outside, I will have to see if the wheels are scratched up and then they will not be used inside any longer. However, if you do not have solid, or have a softer wood like walnut, I probably would not let them be used indoors.
mine are wide as well, I'm guessing so they can accommodate all types of shoes. But when I tighten the skates, I actually bend the plastic edges somewhat so they create a narrower area. My daughter is in a size 7 toddler shoe and i can usually narrow the gap significantly to stop the majority of the sliding. I pinch the edges while I strap the velcro. It works for us.
Not likely. We have only allowed our daughter on the sidewalk but our street is textured and these skates may do ok as they are made well but for a child learning to skate they would not be very sturdy for them in a street. Hope this helps:-)
There are three settings that you can switch between, which allow your child to go from walking to actual skating. The skates are pretty good. They are sturdy and easy to put on and take off. My daughter loves them.