Hey again newbie!
Places where I know the staff speaks English:
The News Cafe in the Hotel Presidente
Costa del Sol...Sergio speaks at least some English, and Italian food is Italian food...pizza is pizza.
Most restaurants in/near the Gulch have at least a couple people who can speak at least some English. Here's a quick list of burger toppings in Spanish:
Mostaza - Mustard
Cat-soop, or salsa de tomate (toh-MAH-tay) Catsup
Cebolla (say-BOY-zhah) - Onion
Pepinillos - (pay-peh-NEE-yohs) - Pickles
Queso (KAY-soh) - Cheese
Papas Fritas or simply Fritas - French fries.
"Hay un menu en ingle's?" (Aye oon meh-noo en een-glaze?" Do you have a menu in English?
La cuenta, por favor - "Check, please."
Hope this helps, buddy. If nothing else, visit one of the supermarkets and buy fresh food, bread, cold cuts, cheese, fruit. There's a Mas X Menos (Mahs por Meh-nos) store right near the Gulch...hey, you can even buy beers and liquor there! Don't starve, friend. Just be brave, nod and point, and have fun.
Oh, one more thing:
Elsewhere on this site is a link to Paul Glassman's excellent travel site on Costa Rica; the link points to a page featuring food vocabulary. Here it is again...
http://www.paulglassman.com/cr4.htm Print this list if you can; it has about 50 different food and beverage words in English and their Spanish equivalents.