Dairy-free cheese is wrong! Just unbearable and salty!
DD is lactose intolerant, but can now tolerate anything, but she gets bunged up if she overdoes the dairy. She was a nightmare to feed and eventually stopped taking any milk at all at 4 months which is when she was diagnosed (we'd told the GP she was intolerant to something, but they kept treating the symptoms, not the cause. It was an A&E doctor who diagnosed her in the end).
In DS we recognised the symptoms and tried him on LF milk which didn't help, so the doctors knew to try him on CMP-free milk. He was only 8 weeks' old at diagnosis because we were listened to the second time.
Interesting about your DH, Firefly. I didn't know they could essentially recover but then relapse. Maybe there is a limited amount they should eat / drink after they recover.
We like Swedish Glacé. It's amazingly creamy for non-dairy. Apparently Ben & Jerry do a dairy free ice cream, though I've not seen it here yet.