Really bad service! Drive thru window was closed so I pulled into parking stall to order. Menu was difficult to read & intercom staticky but placed order anyway. Tried to use credit card in appropriate slot - not sure if it worked. Tried to get someone's attention via intercom - no response. Then got out of the car and went inside to cancel my order - I'd had enough. When I complained to the staff inside, they were rude - one of them seemed to think it was very funny.
Left here and went to the Sonic on Cheyenne instead - a world of difference! The drive-through was open but I pulled into a stall - the intercom worked very well, I could easily place my order! Plus, the carhop actually came out and took my credit card for payment and she was very nice about it!
The bottom line - go to the Sonic on Cheyenne, not the one on Lake Mead!