I agree that 48hr is a good time to shoot for, and it sounds like you do a good job of that, even if the answer isn't available in that timeframe. I was married at a small resort in Jamaica, and most of our frustrations were on a communication level. We ran into problems getting a full understanding of our options and what they would cost. Money was a big factor for us, so we were somewhat flexible with our vision of decorations, etc based on cost. I think pictures speak a thousand words, so if a bride has questions about flower/cake/decoration options, as many pics as possible can be helpful.
Also, although it may be true, the answer of "we'll figure it out when you get here" can be maddening when you are in a state of frenzy over seating arrangements or arch location - lol.