watch out for gusts and if you have the luxury of a long wide runway, try landing at a slight diagonal to reduce the wind angle
A bad practice and not needed, this is a 9 knot crosswind in the sock which will probaly equate to about 5-6 kts around touchdown.
Yes, except for a student doing circuit training
Why? In the year I spent instructing at Sumburgh, Shetland the minimum crosswind I sent students first solo in was 15kts(total xwind)!
Not only did they learn crosswind landings they all got to appreciate why trees don't grow on Shetland.