Worst lfs experience? hmm... the one lfs here has decided to sell puppies in those puppy prisons (the "kennels" that fit 8 dogs in about 6ft long space) and since then their most knowledgeable salt water person has quit. Now, I can't go in there without seeing sick or dead fish or no fish at all. Terrible situation and infuriating.
Also, in another lfs, the owner of the store told me I should have no cleanup crew (snails or crabs) since I have only about 15lbs of live rock in my 46g tank.