I am at DW from Aug 25-Sept 3 (booked before the announcement of SWGE), and I have two DHS days. The first is Aug 28, which I have booked EMM for that morning, and then still have access to the good tier setup, so I have FP for TOT, RnRC, and because we won't get enough of it, TSM. I could not get a SDD on this day, but we have EMM so that's fine.
Specifically related to the new tiers, our second day at HS is on Sunday, Sept 1, the first EEMH and has the new tiers. So we currently are planning to arrive for that, but still deciding how early we need to be there. I want to be able to get into SWGE and get on the MFSR, but also willing to see if the Virtual Queue is implemented at DW, and will book that if we are not fast enough. I have a FP for SDD at 12, Star Tours 1:40, and Voyage of the Little Mermaid is 2:40. I wanted to give myself enough time to get through SWGE before my FP started. It is hard to plan, because it is the first EEMH and we can't be sure how it will play out, so I am hoping that that first FP for SDD is not too early and that I lose my one tier 1 ride!