It's nice that you have are applying for a job but just remember a few things.
1st. You haven't even applied yet. Don't think the job is yours already. McDonalds might not be the most popular place to work at but it's possible that they have more than 1 guy wanting to take the job.
2nd. It's McDonalds, I highly doubt anyone likes working there. It might be alright but I'm telling you there are better places to work at.
Anyway, it's still a lot better than nothing so go for it.
But don't expect it to be the best thing that ever happened to you, if you do then you will be disappointed.