It was always a relative few people who were allowed to entertain the CO when he stayed. We did lunch once and I cooked and invited a few over. As I remember it was a pleasant lunch with the CO not wanting to get involved in congregation politics nothing too heavy.
I did find going out with JWs generally was a nightmare, especially when it came to settling the bill. Many did not want to pay for service and on occasions would leave without having paid appropriately. We were once left to pay the balance of £50 because half the party had left without clearing their bill completely and the other half had people who refused to leave a tip even though the service had been wonderful. What was annoying was that we probably were the least well off people there and yet the others had no embarrassment leaving us to pick up the bill.