Not at all. They can only check your profile if you're already friends with them. Being accepted into a group is only a matter of the admin saying yes.
You can share to a different page from Pinterest business account. Choose the pin you want to share, go to the bottom-right corner ("send" sign) - Share this Pin -...
Percussion - auxiliary percussion to be precise. They can typically be found in nearly all forms of ensembles, such as orchestra and concert band, even marching bands have them in...
You should be able to make any adjustments to the printing order in the Print Options window. I'm not sure if this particular change is possible though as it depends...