You might want to check with them, Golf Cart Enterprises, and Disney to make sure they are being allowed on site still. I know at one point they were not. I was told this by one of the CM's the the Cart rental at FW that because of the increased security, a lot of vendors that did not have Disney contracts were not being allowed onto Disney property, even if it was for a Disney guest. I was informed that the only way I could have an "outside" cart brought in was if I brought it in myself. This may have changed, I do not know, but you might want to check with both GCE and Disney to avoid any headaches on your trip.