We're just back yesterday after 3 park days on 1/7,8, 9. DHS was much more challenging than our prior 2 trips with G+. ToT is very hard with only 1 shaft operational and I tried one day for over an hour refreshing (around mid-day) nearly constantly and never could get a LL time to appear. We ended up getting in line at 8:56pm in order to ride. Standby times were always listed as over an hour (both
MDE and TPLines) and sometimes 2 hours. When we got in line it said 90 minutes on the standby line sign at 8:56pm, but the CMs said it was the shortest line of the day and we were done with the entire ride in like 53 minutes.
As "luck" would have it, we were taxiing to take off on Saturday, 1/7 at 7am so my DH and I were scrambling to grab Rise, FoP, and our first LL. I was successful in grabbing SDD but the return time was too early, like 9:35am, lol. We weren't going to be in the park until around 11am, so couldn't keep that. And of course, modify offered me 7pm (also not working with our plans), so we modified to MFSR. That was the only day that grabbing a SDD LL would work (we needed our 7am slot the next day for Remy), so we never got SDD, which was fine.
We also had issues on our final morning trying to buy ILL$ for Guardians and FOP -- it kept saying there was a problem with the payment method (there was not). We had 2 phones going and trying and trying and it took about 5 minutes of trying and after 2 minutes, 1 phone got FOP and another 3 minutes and the other got GoG. We had tried the stored paymethod, apple pay, adding a new card, etc. I took a screen shot of the error and was prepared to get help from the front desk. Eventually we had 1 person trying to purchase and the other chatting via the app. The chat help said to log out and log back in, and maybe re-install MDE. Fortunately, after about 20 tries it also went thru before we had to try that.
I also had a problem pinning rides after our first day. I'm not sure what that's about, but it was annoying.
Personally, unless you are there for a week, I can't imagine NOT getting G+ and buying ILLs. I know it's a lot of money, but if you are on a strict budget, I would actually tally up the costs of adding it to some of your days and then in the lead up to your trip, figure out how to pare that amount from your regular budget: skip Starbucks for X number of days, get take out instead of sitting down at a restaurant where you have to order beverages and tip, whatever. To us for a 3 day trip it was invaluable!
And if you opt not to get G+ please still buy ILL for GoG -- it is truly an amazing experience! We were going to try to get a VQ and ILL but MDE choked for me "applying pixie dust" and the VQ was gone. So we just got an ILL, but literally midway thru the ride I knew we'd add EP to our plans the following day to get another ride in (which we did).