Congrats on your pending home purchase. Best of success, Annette Lawrence, Broker/Associate, Remax Realtec Group, Palm Harbor, FL 727.420.4041
Some lenders are really good at meeting closing dates and some have a lot of red tape and are not so good. The larger the bank, usually the slower they move.
Just keep in good communication with your loan officer and make yourself available to fulfill any last minute conditions, and hopefully you'll be fine.
Once a clear to close is granted, it generally takes a day or so for the documents to go out to the closing agent and to get you your figures for closing.
I always advise people not to line up movers,deliveries, cable installers, etc until everything is cleared and the closing is set. Before then, any number of things can happen to delay things, whether it has to do with the loan, the buyers, or the sellers.
It's not over til its over!