I am a server and the one thing I find that is rude, not nessesarily with solo diners, but with all diners, is when someone is on the phone and finds their conversation is more important than addressing their server that has walked up to greet them. In my restaraunt, we have a time limit we need to fulfill to greet a table. We do have secret shoppers that time us ( sounds kind of ridiculous does'nt it). So when we see guest's on the phone, we usually watch for them to get off and then approach them....but then that could be up to 5 min. Sorry to go off on a tangint ( if that is how you spell it). Basically, just give the server the same respect you would want to be given, I personally think that if you listen to music in both ears, they might feel scared to approach you, like they are intruding or something. That is just my info. Have a great trip:wave: