Each morning, by the time the doors opened, there were about 100 of us lined up waiting to get in. It was just dumb luck on my part because I didn't know anything about it. The Library staff recommends that you check to see if there are tours scheduled at the time you plan to visit. There are numerous accommodations in the immediate area of the FHL and good restaurants as well. The blocks are very long so be prepared to walk some distance.
Parking is good.
The FHL is across the street from Temple Square. Don't miss hearing the Tabernacle Choir and the organ during your stay. Across the street from Temple Square is a large multifloor shopping center with all kinds of shops and restaurants. A lovely experience for any non-genealogists going along. These are long days of researching.