What are the effects of alcohol on muscle memory?
Alcohol consumption causes deficits in motor coordination by affecting the cerebellum, which is the main area involved in regulating finer adjustments in movement and motor learning. From Belmeguenai et. al (2008):


  It has previously been shown that ethanol modulates inhibitory transmission in the cerebellum and affects synaptic transmission and plasticity at excitatory climbing fiber (CF) to Purkinje cell synapses. However, it has not been examined thus far how acute ethanol application affects long-term depression (LTD) and long-term potentiation (LTP) at excitatory parallel fiber (PF) to Purkinje cell synapses, which are assumed to mediate forms of cerebellar motor learning.


The tasks you have outlined above are all considered 'fine motor skills', and are thus mediated in part by the cerebellum. It is certainly the case that alcohol consumption affects finer muscle coordination. It is also the case that hangover effect reduces athletic performance by up to 11.4% in trained athletes (who would fit the 'expert' level you have described above).

There aren't many studies on alcohol's effects on muscle memory specifically, though there are studies on how sleep affects motor learning. There is also evidence that alcohol consumption mimics the effects of sleep deprivation, and affects sleep quality directly.