For me, the best way to deal with something like this is keep the visit as short as possible and you stay has upbeat and optimistic as possible.
Avoid talking about religion. Be ready with a comeback for when they ask about your spirituality (or other some such prying question), tell them you are doing very well. If they push further, repeat that you are doing very well spiritually. If they continue, tell them it's personal and between you and Jehovah and you have never felt more content with your relationship. (I hope this is true.)
Be happy with your life. Talk about hobbies that enthrall you. Get everybody outside and go for a hike or a long walk. Or just send your self out for a couple of errands or a long solo walk.
Do some activity (art gallery show, museum, movie) something new that you can all talk about.
Good luck with the visit. I hope you can find/create a few fun moments and memories with them.
-Aude.