While Mexicans Visas are easier than US/Canadian Visas
The applicant will still need to prove they have funds and ties to DR.The mexican Consulate usually assumes the Dominican national will use Mexico as a Bridge to illegally enter the USA therefore those with US Visas usually get Mexican Visas pretty easily.
Mexico also will ask certain Nationals who they consider to be a flight risk for a Bank deposit and the money is returned once you depart Mexico.The amount could be anywhere from $500 to $4500 US Dollars.
Usually the clearer your purpose of Travel is the easier it is to optain visas.
Especially if Youre going for Conferences and Honeymoon.
Good Luck!