I recently got hired at a well known shoe store. They email you the new hire paperwork & you fill it out online. I never received it so my new manager had me go into the store to fill it out on their computer. When I was finished he told me once I'm in the system I'll get another email & he'll call me when to start. That was the beginning of this week. I've been waiting & waiting for the email & I finally received it last night after the store was already closed. I figured he would call me sometime today but he didn't so I called him after lunch. He asked me if I would like to start tomorrow (as in Saturday) or wait until Monday. I told him Monday would be better & he said that's fine. He didn't ask for an explanation or anything. I chose Monday because my family & I have plans this weekend that we've made weeks ago. I of course didn't tell him that. My question is does it make me look bad that I chose to start Monday instead of tomorrow? I'm having second thoughts about telling him Monday. If I choose to start tomorrow instead how would I even tell him I've changed my mind? What would you do if you were in this situation?