Wow, this was really well written and a pleasure to listen to. It kept my attention ths whole nine minutes with elegant orchestration and smooth modulations. I especially liked how your glockenspiel, harp and woodwinds worked together to create delightful flourishes and embellishments.
If I had any suggestions, it might be to move the melodic line around a little more -- I wasn't really keeping track, but it felt like a lot of violin with some woodwind doubling; a few more sections featuring the cellos or horns could add some nice contrast in a lower register.
There were a few places where the time signatures were doing weird things. On page 10, the rhythm switches to 3/4 with no change in notation at m. 42. The time signature finally changes on pg. 12, m. 57. The same situation happens on pgs. 40 and 41. It may be that I am misunderstanding something about the use of common time in waltzes -- those spots on pgs. 12 and 41 just threw me off.
I'm also kind of astounded that your music program has the option to play back the waltz with the traditionally stilted Viennese rhythm. It added a really nice authentic vibe to the playback.
One final question: is it usual to have such an extended section in 4/4 time to start off a Viennese waltz?
Really great work; thanks for sharing!