Dinner without the sauce and butter?

We were able to make reservations at Akershus lunch/breakfast and BOG for dinner. I am now reviewing the menus and a little worried. We are not really picky eaters, however we all have very sketchy stomachs. Not tolerable to heavy sauces and butter. It appears the majority of menu items appear to be swimming in some sort of sauce or butter. Are we able to order sans the heavy sauces? Seriously considering cancelling reservations that we tried so hard to get to avoid our family becoming ill and missing the parks.

I can’t speak to any dishes at those specific places, but as someone who eats out a lot at WDW and at home, I have never had any issues getting sauce on the side - just ask.