A bit tough on your summary of us cheapskates here

. We use the StayPlus for one night in-transit stays at premium hotels staying the free standard room.........
Yes but that assumes that there is availability at the property you are interested in to use the StayPlus certificate. While that may be easier to do with something like a Movenpick, for certain properties like again the Sofitel Sydney Darling Harbour it was very tricky indeed. For instance, we have a whole thread on Australian Frequent Flyer where would be Accor+ members could ask members to check if there is availability.
One other thing to consider, and perhaps I am somewhat being a broken record here, is that you get 15% discount on Accor hotels around the world now. So if you are travelling a lot (particularly to Europe) you've now got the opportunity to save even more at Accor.
All our multiple day, holiday stays though, are in premium suite rooms (with lounge access where available). As I understand it the new buy one get one vouchers, cannot be used for these suites, so they are junk for us - not usable for intransit or for our holidays (unless we downgraded our room preference).
You are correct that the Stay Plus coupons (if we can call them that) can be used for a standard room booking. However, just as is the case with the current Stay Plus program, some hotels will allow you to book into a premium suite room for a small supplement (
per the T&C's). Interestingly, and something I haven't seen anyone discuss thus far is some hotels may require a stay of 3 nights to use the certificate.
Again, what will matter at the end of the day is how this is implemented. If I can look for a stay at the Sofitel Sydney Harbour and book one right away without having to check months in advance, I would see that as a win.
The extra 10 nights not much value to us either, as we cannot stay in premium suites for 30 days a year. We have only ever got our higher status from our high spend on suites, so extra nights also junk.
The problem is they cap it at 30 max for “free status nights” so you can no longer stack other programs like Accor China to get up to the 60 nights.
I would make the argument, and perhaps I am the outlier in this thread, that the people who benefit from an elite status like Accor Platinum are people who stay regularly at Accor properties. What benefit is there in holding Platinum status if you only spend 5 or 7 nights a year at Accor? This year, I am on track to stay between 30 to 40 nights at Accor properties and have gotten decent value from the program both in Asia Pacific and now in Europe. The only reason I could see for pursuing Accor Platinum status if you don't stay regularly at Accor hotels would be the Qatar Gold (OneWorld Sapphire)
status match.
Bit of a Newbie question (as someone who’s finally signed up to A+). What is the actually constraint on checking stay plus availability? The explanation here is a little vague.
Basically the hotel needs to open up availability for StayPlus stays. It is all completely at the discretion of the hotel and not transparent in anyway. For some properties it may not be much of an issue (ibis Budget Sydney Olympic Park), but for more highly coveted properties such as the aforementioned Sofitel Sydney Darling Harbour it can be a challenge.
I assume if you’ve used a stay plus for a future booking you can’t then check if there’s a better deal elsewhere or at the same place?
If I have an existing non-stay plus booking in the system I can still check if the stay plus is a better deal (which seems to be what I can see)? Or am I missing something?
The StayPlus system as it currently stands offers fully refundable bookings. So in theory yes if you found a cheaper rate or no longer needed the stay you could cancel and get your StayPlus credit back (indeed I did that back in 2022). As for the other way around, you would need to check if there is StayPlus availability, and provided you have a fully refundable cash booking, could cancel out the booking then use the StayPlus credit to make the booking. How this works on the new system remains to be seen.