You can't compete against the all-inclusives unless you offer complimentary food and booze or you're cheap, as you seem to be confirming.This being said:1) Properties in Mexico/Cancun trade in USD so you have no foreign exchange risk in Mexico while properties in Colombia are traded in COP, the Colombian peso, which has been tanking over the years, eliminating any hope for capital gains for American investors.2) You can get a mortgage in Mexico but you can't in Colombia so even with lower revenue, Cancun would likely still be more profitable, even if you don't take capital gains into account.3) The political risk is much higher in Colombia, especially at this present time.Is Cartagena a bad investment?

If I go with the BRRR strategy would love to hear some tips on how to successfully manage the rehab remotely. if you have money you could potentially lose to learn quicker start with the BRRRR method.

this is old  tried and true method of simply having you pay them to get credit cards .. there is no need to pay for this service.. unless you want to of course.. there is no magic bullet ut there that is going to give you credit and financing unless you actually qualify for it.But zero interest credit cards are used by some to do rehab and then pay them off issue is though your fico score drops like a rock the second you take on all these CC.Also starting out there is zero chance of getting any kind of business line of Credit that is unsecured.

Every marketing direct to seller method out there works. 

Hey Marshall,I would consider going the BRRRR method.

This is technically a method of buying/selling real estate, which is illegal without a real estate or law license. 

All of these required trade-offs though.

2.For purchases made on a credit card, is it best to use separate cards, or are there good methods for tracking expenses by property?

If you are seen to be using this for investments, then you will find it hard to get another FHA loan, making this method difficult to scale, but good when you are getting started.

Nathan's search method usually works, but I use what Google suggests: '<search item> site:www.biggerpockets.com' (without the single quotes on the Google search bar.)