This might seem a bit confusing, if it is too confusing follow the pp advise.......
You can either take the FW bus or the WL bus, whichever comes first, or if the resorts are sharing a bus. If the WL bus shows up first or the resorts are sharing and the bus goes to WL first, get off at WL. From WL you can take a bus into FW, the first stop on that route is the one for HDDR.
If the FW bus shows up first or they are sharing and FW is first(unlikely) then get off at FW and wait for the Yellow or Purple Settlement bus, the number of stops between you and the HDDR will vary depending on whether you catch yellow or purple, but the total ride time is similar(10-15min) so don't wait for one over the other.
In short, getting to WL means one more stop between you and HDDR getting to FW means 3 to 5(not exactly sure) between you and HDDR, either one involves 1 transfer.