When we got out LMB, my partner looked at it in the bag and said, "You'll never see it again after you put it in the tank". That was correct for 3 days. Now all I have to do is walk up to the tank and the LMB will come right out and sit at the glass and stare at me. But for 3 days I barely saw it, it just stood really still somewhere in the rockwork at the back of our tank. Now it cruises around all the time going from rock to rock trying to scavenge a meal.
Mine will not eat the seaweed on a clip yet either. The seaweed eventually just disintigrates and disppears in the tank, but I do leave one glass wall of the tank untouched, because it seems the algae grows faster on my glass then it does on the liverock. I have also used algae waefers in the tank, and I dont know if a crab got that, or if he did, but it soon disappeared from sight.
LMB's are full of personality once they are accustomed to their new surroundings.
As far as drip, or no drip. I dont drip fish from my LFS, I just open the bag up, roll down the top edge so that it floats in my tank, and about every 4 to 7 minutes I pour in 1/3 cup of tank water, after about 45 minutes to an hour, I pour the bag through a net into a bucket and put the netted fish into the tank. Always worked for me without problems or incident.