What time did your shuttle arrive??? Unless you are arriving at the park well after noon, and outside of Chistmas week, it's unlikely FP's for TSMM were gone. Very late & possibly undesirable return times, definitely, but outside of extreme crowd days FPs tend to be available at least until early afternoon in *my* experience. We are hit/miss with RD but we've always managed to pull FPs for TSMM unless we get to HS at 3pm. I think it's an exaggeration to say that unless you hit RD you stand no chance of getting a FP for TSMM.
And see, for those of us with APs and TIW who plan day trips or last minute weekend getaways, this is "too" much of a package. What we need are really good FL resident or AP holder discounts on rooms, then we stay on Disney property 100% of our trip.
Since there's not really a true low season any longer I personally find the availability of discounted rooms to be fewer & far between & it made us start looking off site. So in our last 3 trips of 2-4 days each, we stayed off site for a huge discount over Disney's prices (even when we add back daily parking). Other hotels/timeshare facilities were thrilled to book last minute deals, Disney is too busy to care. They can/want to sell those rooms in a package (like you stated) and roll in all the extras like the
DDP to really get the most bang for their buck per square foot, lol. We also ate more meals offsite than before & saved money there too. And bonus! We loved being able to grab a late night meal or snack at a fast food chain vs foraging for late-night food options at the parks or our hotel food court/restaurants.
It was also nice to get AWAY from people, lol. I never thought we'd enjoy staying offsite because part of what I loved so much was the feeling of being immersed in all things Disney..... but lately that has come to mean being immersed in higher crowds, more of the "Me 1st" attitude with things like GAC abuses, longer waits, more ride malfunctions & delays, etc. Sometimes (not always) but sometimes on recent trips we've had to work a bit at remembering the Magic instead of feeling it as naturally as before.