Is my my Mother-In-Law's Husband crossing the line?

So my daughter is a little over 1 1/2 years old and I'm getting tired of how my Husband's Stepfather has been towards our parenting. He doesn't think that she should be disciplined because she is too young to understand it, despite her actually understanding how Time Outs work. He doesn't want her to learn other languages other than English first and doesn't like how if I'm out with MY OWN CHILD, that I take her to McDonald's because it's "poison." She doesn't eat out very often unless I have to do some errands and she's with me.

Don't get me wrong, him and my Mother-in-law have helped us out tremendously if we are caught in a bind, but my Husband and I are the ones to tend to her, get her what she needs and basically parent her.

I just feel like he doesn't want to listen to what I have to say as her Mother because of his own opinions. It irritates me, but I am still grateful for all that him and my Mother-in-law have done for us.

I don't want to cause an uproar before the holidays, but her behavior has been getting worse.

Her tantrums have been getting worse and I've tried doing all I can to put her in line without going too far. But I don't know how to go about this and I'm going to talk to my husband tonight about her behavior and what all occured today - which is how I've noticed she acts out more when my Mother-In-Law's husband is around.

I would appreciate any advice you guys have to give and please be nice about it if you can.