I applied for 2 credit cards Same day (ED and the BCE), the following day the Standard Gold card. 2 days after that that the platinum. Instantly approved for all of these cards.. To my understanding, you can not obtain 3 credit cards with in 90 days, per the AMEX 90 day rule. This does not apply to charge cards. If anyone is a big traveler or into everyday spending, PLEASE look at the sign up Bonus before applying. Find the max possible bonuses out there. I found a random offer that normal doesn't show up that offered 75k points for the Platinum if you meet the minimum spending requirements, which is $5000 in 3 months. If you are someone who has normal bills, including cars loans or a Mortgage, you can use CC to pay your loans and other bills, there are services out there who will help you do so, which will churn your spending in order to meet the minimum requirement, but this is another topic for another page.