I stopped at Anadyr for fuel last September. Lots of work in progress on the runway - big displaced threshold and GP out of service. Main apron was not allowed so we parked to the west on a smaller dispersal with no facilities. Fuel truck, customs and handler all came to us. Had a pee behind the fuel truck as didn't want to waste time being driven over to the terminal.
Turn-round took 1.13 which is not too bad under the circumstances. Just make sure you check NOTAMS regarding the runway and have all your paperwork/visas in order and you should be fine.