I don't think dry fasting is as you say, I was definitely eliminating toxins during the first 7 days (dry). Also I did the next 21 with water so that should have helped the tongue.
I strongly doubt the bloating has anything to do with stomach strength. The bloating started after I got a stomach ulcer 1.5 years ago. During this time I was working out a lot, and was pretty healthy, six pack, etc so the bloating is definately related to the time I got the ulcer.