and maroon dress Off the Shoulder Burgundy Modest Bridesmaid Dresses with Slit ARD2078 Hang Or Line Dry Women's Satin Mermaid Evening Gown

Those are actually Color 8 cordovan full-strap loafers from Alden, more on them here Most of the time, yes

Or if you want to wear trainers with tailored trousers, its easiest to do it if the trainers are a neutral coloured leather or suede in a minimal design, rather than sport trainers

For the engagement party

Filogomo suggests layering a lacy blouse or top, or a pretty scarf, under a sleeveless dress

One of these was the unusually designed white evening gown with black embroidery (forgive me I don't know any design jargon)

Be sure to cover the pasta salad and refrigerate it overnight or for at least 4-8 hours so the flavors can marinate together