Sep / 24

Orientation at Olive Garden, what to expect?

                        I have orientation at Olive Garden tomorrow I applied for a host position.
This past week I was told to go in for an interview, but it wasn't really an interview. I met the manager and we only spoke for about 3 minutes she asked me very basic questions and told me to come back on Saturday, then told another girl to show me around the restaurant. The girl showed me all around and she told me that when I go in Sat I will have to dress up like they do.
Why is that? If the manager never told me I got the job or anything, what can I expect from going in? What all do you do at an orientation? 
I've never been to an orientation (my last job, where I worked for 3 years, didn't have one) 
Is there any helpful tips you have?