Few questions on AMC

CFA Book page 197 states, manager should CONSIDER impl anti money lanndering policy. I thought that someone here stated it is a must. page 202 WHERE POSSIBLE, compliance officer should report to CEO directly. I dont know why they say that esp that it is clear that they have to report to CEO as per sample exam. Any disagreement? AMC asks that managers define minimum value of gift in consultation with local regulations, wherein I dont think standard requires any definition of minimum. can some one explain what is side letter, tig-a-long etc referred to in page 198? AMC requires Gross as well as Net of fee to be disclosed wherein GIPS does not. For business continuity, remember 3 Cs. communication with client, vendor, own staff…it also includes back up site, plans for monitoring trade. periodically test the plans firm wide.