I am looking for beginner roller skates for a 6yr old boy size 1.5 shoe?

Consider a couple of skating lessons before the party... if you have time. Most children can become independent on skates in about 30 minutes with a good instructor. Parents are usually determined to hold the child and eliminate falls. But a good instructor will help your child understand what makes the skates go, what makes a bad fall and more importantly what makes a good fall. And good falls are an important part of learning to skate, since even champions fall once in a while. This skating adventure is just like learning to walk again. There will be stumbles and falls. If your child's arms are getting sore and your back hurts... try a skating class or even just a couple of private lessons to get him going safely and keep you pain-free, too. Final tip. The 1-2-3 skates appear safe because they do not roll much, but usually the wheels are very hard plastic that will slip and slide on a rink surface. A safer solution is to use good rink quads or inline skates with soft wheels. Ask if the rental attendant can tighten the wheels a bit to slow them down for your son.