Unfortunately, they do not offer free play to new card members. They have a great selection of slot machines, as well as table games.
The casino itself isn't super big, but big enough. That being said, this was probably the quietest hotel room I've ever been in and the bed was very comfortable. It was also extremely cold in the hotel they had the air conditioning on full blast. I had terrible allergies while staying in this room. We didn't have a mini fridge or safe in the room, which seemed odd as these tend to be standard. The room itself was clean and had two recliners in it which was a first in a hotel room for us.
Our room was on the top floor and had a view of the parking lot. Check-in went smoothly and the individual checking us in was very friendly.
It doesn't look like much from the outside, but inside the resort & casino are quite nice. Island Resort & Casino is pretty much in the middle of nowhere.