Bring your whole group. It is unrealistic to expect that a landlord is going to rent an apartment to people who he hasn't met and who haven't seen his apartment. For example, if you are going to be paying your rent with scholarship money, bring something in writing to show that you've got the scholarship. Give the landlord a copy. Don't expect landlords to take your word for things.
Landlords know that people often lie on rental applications.
Bring a photo of your pet with you. Show it to the landlord. Many landlords don't allow any pets at all. Bring documentation with you. If your cat has been spayed, show the landlord the certificate or vet's bill to prove it.