Because there was some suggestion that buses are less of a hassle than ASresorts. Fewer people. I also got the sense that it is less chaotic, generally. We don't intend to eat there much, so that is little concern for us.
But I cannot say for sure...we leave a week from Sunday!
Pop has 2,800 rooms
All Star Music has less than 1900 rooms including the Suites.
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All of the rooms at All Star Music have been refurbished.
The outside of the buildings have also been touched up and the main pool was just refubished. Everything looks bright and clean.
See this thread:
We stayed at ASMu this past June and loved it. As mentioned in earlier posts, it has just gone through refurbishment and is amazingly clean. We we amazed at how clean everything was there. You could not walk anywhere throughout the resort that you would not find someone cleaning, emptying trash, picking up something on the ground etc... Of course, you see this pretty much anywhere you go at Disney.
The greenery is pretty awesome. It has much more greenery than the other All Star hotels and I really enjoyed that.
I think you will have a wonderful time.
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The rooms have been newly painted, they have new carpet and new furniture, bedding and curtains and the curtains for the tub are bowed thus giving a little more elbow room.
Here is a website with photos of the newly refurbished rooms at All Star Music.
Look at the Jazz Inn section with new posted:
http://allearsnet.com/acc/g_asmu.htm
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A word (or two)about BUSES :
During our stay a couple of weeks ago (September 12-19) All Star Music only shared a bus when returning from AK and DTD.
All of the buses going to the parks went directly to parks after pick up even when the bus was less than half full.
My friend and I decided in the early afternoon of one of our Disney MGM Studio days to head back to ASMu for a dip in the pool. We were the only ones on the bus that trip!
Bus rides are quite short from the ALL Stars according to PassPorter.com
All Star Buses-CBR buses---POPbuses--PO buses--- Contemporary
MK 20 min---- 20 min-----25 min------10 min---20 min(mono)
Epcot 10 min-- 15 min-----20 min------10 min---15 min
MGM 10 min----12 min-----15 min------15 min---20min
AK 10 min------20min-------15 min----15 min---20 min
DTD 15 min----20 min------20 min-----15 min---35 min
It only takes 10 minutes to get to Epcot, MGM and AK from All Stars.
MK is 20 min away. That's the same amount of time it takes on the monorail from the Contemporary.
A WORD ABOUT BUS SHARING
To me Bus Sharing at the All Stars is really a non issue.
In the mornings during Park opening hours each All Star usually has a dedicated bus.
During mid day it is usually just our stop and maybe one more on the way to the parks. On the way back sometimes it is all 3 but often Sports and Movies share and Music has it's own bus back. Each of the All Stars usually has it's own dedicated bus back from the MK.
That is a big plus. It seems like the Music bus stop usually has the shortest of the three All Star bus lines.
I guess some people who stay at POP see all 3 All Star names on the return sign of our bus stop when they head to the POP bus stop and think All Stars also has 3 stops on the way to the park.
(Even when we stop at another AS resort to load up it has not taken more than 5 minutes and we are on our way!)
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Have a wounderful honeymoon at Disney wherever you choose to stay!
I did not stay there but did stop by last October, and was disappointed to see some of the same problems I'd seen when staying there a couple times before. 
