Here are a few very basic Arabic words for you to have a go at prior to coming to Kingdom. They do vary from region to region, but will be understood.
What is your name?---------------ma ismok?
My name is-------------------------ismy ______
How old are you?-----------------kam omroka?
Nice to meet you------------------tasharrafna
Goodbye---------------------------ma'assalama
yes----------------------------------na'am or aiwa
no------------------------------------la
Hello!-------------------------------marhaba
Good Morning---------------------sabah al-hayri
How are you?----------------------kayfa haluk?
fine!----------------------------------biheyr
Please-------------------------------minfadlik
Thank you--------------------------shukran!
Thank you very much!------------Shukran Gazillan