If your invitation says “and Guest,” then yes, if not, we would prefer if it was just you. / Si tu invitación dice " and Guest" entonces si, si no lo dice entonces preferimos que solo seas tu.
Cocktail, please. But we want you to feel comfortable, so if those shoes are too high or that top button is too tight, let it all hang loose. / Cocktail por favor. Queremos que te sientas cómodo.