When Melissa sits on the boat she is wearing her black stockings, but in the next scene of her standing up she is not wearing them.
When Stacy stops to give Vinny a ride just outside the gates of the spa, she is wearing Ray-Ban Wayfarer style sunglasses, but when she arrives at her home, she is wearing a similar looking but different style of sunglasses which have no rim around the bottom half of the lenses.
During the scene with Melissa at the doctor's office, when she is being told of all the afflictions she has, the doctor incorrectly calls the AIDS virus "Acute Immune Deficiency Syndrome" instead of its correct label of "Acquired Immunnodeficiency Syndrome."