Which brands and collaborators have partnered with Mercedes Jackson in her travel and media endeavors?

Based on the available content, Mercedes Jackson has collaborated with various brands and entities in her travel and media endeavors. She has worked with @mediagirlsla and @blacktravelexperience for a brand creator press trip in El Salvador. During this trip, they stayed at a villa @casadesuenos.sv. She also mentioned a few restaurants and activities, such as El Novillo 503, La Gastroteca Restaurante, Monte berat ataco, Beto’s restaurant, Sento Luxury Spa, Cafe Albania, and atacobuggytourelsalvador for ATV riding.

However, it's important to note that these collaborations might not be exhaustive as Mercedes has a dynamic career and might have partnered with other brands not mentioned in the retrieved content.