Yes, the caterer usually has a price sheet that gives the prices of linens for each table. Most will include linens on the buffett table, cake table, guest book table and head table. Of course there is charge if you want another color besides white.....
Easy. Have them pick up the dirty tablecloth and put on a clean one. Precisely how this is accomplished, no one cares!
I don't know about the Henckles knives, but I do know that Pampered Chef knives are good quality. I love mine!