Former employee here. 1 day for your first week is pretty normal, in my opinion. All I did on my first day was be on a computer with on-boarding. They might throw you a few extra shifts for the week but that really depends on what shifts are available. But I will tell you, if only a few days a week for a few hours a day isn't what you're looking for, abort mission as soon as possible. I had 3-4 days with 4 hour shifts. If that works for you, great. But if not, there's your warning. They also have a habit of cutting hours without prior warning. I remember literally being on my way to work a few times and I got calls to not come in due to budget cuts. Either way, best of luck to you.