Just be aware that they don't always get it in all 3 areas - DD had it really mildly (thankfully!) last year twice. The first time only about 10 spots all up on her hands, second time just a few on her feet and one on her hand. We were very fortunate it wasn't any worse.
Yes! This is why I didn't realise DD1 and DS2 had even had it because it was so mild in them and they only had a mouth ulcer or two, but it wasn't until DS1 got it really bad that I knew in hindsight that the other two had it.