I found this very interesting (I was going to come here and ask the same question). We got off Harmony on 7/17. It had been almost 8 years since our last cruise (on Disney) and when we left the ship at debarkation I was surprised we just waltzed right past empty Customs desks. Having cruised many times before, I remember the declaration forms and the line through Customs.
Besides identity checking, the customs forms had you declare items you bought so you could pay taxes on overages beyond the allowance. Does anyone know how that is handled now or do they just think it was too much time/effort/cost for the amount of taxes being collected?