We've seen a post holiday spike in eBook downloads which is what we expected. It is important to note though that our average wait for holds is only 12 days. This isn't too bad considering the demand for the popular titles.
If your patron is asking about availability of titles remember to point out that some titles are not available due to publisher's restrictions and that using the Holds feature for titles we do own works wonderfully.
When an item is put on hold patrons are asked to give an email address. Hold notifications are sent to that email and folks have 3 days to download a title. Having several titles in one's Holds queue is a good practice.