Addlestone Library is open to the College of Charleston community and affiliates via card access. Visitors may access Addlestone Library Monday-Friday, 9am-5pm, and must present a government issued ID and sign in upon entry.
Yes, you can put a hold on EBSCO ebooks. See page 3 of the attached pdf.
And yes, you can get in the queue for ebrary ebooks if the someone has accessed the book first. This web page explains how: Queueing and Access to Single-User Books.