If iwas you make sure on your first journy you have some cash in your pocket I think technical you can bring 10 thousand in pesos in to the country. Ideal to have. You never know how you will feel after the journy seen some total wrecks on the plane with nerves about meeting up ,other people calm as a cucumber yet its there first journey over (learned from a quick convo)
The first time i went i was so glad i had some local currency in my pocket.
Also is it wise putting all your cash in one account? with one card?