Mom wants me to have House Salad at restaurants vs. French fries w/ DisableD summer Camp

Background:

I have no gall bladder and when I was at Disabled summer camp the other week on Tuesday morning I had the runs (TMI)  after having too much pepperoni and cheese on my pizza  (And maybe some chips).  When I told Mom what I ate when DSC went out and we had to go to place B instead of Place A,  Mom said I should have the house salad instead of French Fries.  

Story

Next week I'm going back to DSC next week and we're probably going to go out.  I don't know what I will do depending on where we go if I choose fries (which are tastier)  or make myself have house salad which I might not like?    But I think my problem is in most restaurants you have to choose a salad dressing for the house salad and I don't really want to have to do that.