I have two long haul trips coming up from CDG, first time flying AF long haul in C. Both ex-CDG flights offer the same options for prebooking; I noticed the exact same four options also being shown on the menu in the post above this one. Would the same dishes that are available for preselection typically also be available on-board if one does not preselect anything? Or do I eliminate the (potentially better) options by prebooking lunch beforehand?