I have literally skated:
Rockford (both rinks), Crystal Lake, West Dundee, Vernon Hills, Buffalo Grove, Gurnee, Rolling Meadows, Hoffman Estates, Highland Park, Winnetka, Skokie, Evanston, Park Ridge, McFetridge, Woodridge (7 Bridges), Niles, Glen Elyn, Downers Grove, Oak Lawn, and probably a couple more that I am forgetting and I can't ever say I didn't feel welcome. Some places I felt more comfortable than others, but never not welcome (and there are the occasional children who are rude and have stink eye, but whatever). Some coaches don't want to work with adults, but there are a LOT of choices in this area for coaches who are more than happy to take on adult skaters.