Estoppel letter, when can I legally get this?

[Meredyth M.]

buying rentals in Florida and I asked our realtor to get info so we could meet with current tenants to get estoppel letter on a rental we are buying. I was told that we are not allowed to meet with the tenants prior to closing and its up to the current owner to allow this meeting. From what I am reading, we are allowed to get this information prior to closing, can someone please advise on this? Thank you.