The G space is in place from 2007 I think, but take a good look in NOTAMS for LRRs LRDs etc which are extended almost everywhere, especially in the East, I reckon with much less activity in the latest times; ATC people for controlled spaces are English proficient and for the rest you can get a prior arrangement, part of the pre-flight job. Will work for sure with correct contacts in sight, no worries, no thrills.
Sorry for the late post, I was admiring aviation activity at LOWZ, from a more earthy but nevertheless attractive perspective.