What cards are best to use to purchase Paypal MCCs? Will I gett A/A or F/R with Amex, Chase, Citi AA, or Barclays? What is the recommended max (amount of cards, time between card purchases, and/or $ amount) to prevent A/A or F/R per card? What businesses carry these cards? Sorry for the n00b questions. Still learning all of this stuff. So much knowledge; so little time! TIA
I'm probably not the right person to answer most of these questions, but if I had to make an educated guess I'd say:
It's whatever card you want to reach your sign up bonus on :-)
It's always a possibility.
YMMV. I have been going full throttle for a almost 6 months now, got 2 Amex F/R in the 1st 2 months working on sign up bonuses and came out with little harm. Others have been closed down right away. If you have always spent a lot on your cards, have proof of income, answer all their requests as soon as they ask for it, don't stick your foot in your mouth (by saying you're buying cards to spend towards your sign up bonus without spending any real money, only want the points, and/or want to make money selling points and that's why you have a business card) you'll most likely be ok, IMHO.
CVS and Rite Aid will often have them and let you buy them. Be friendly, courteous, polite, and most important of all, don't take no for an answer until you believe you've exhausted all options, and then move on to the next store. Speak to whoever you need to, be (politely) persistent. Make believe you know that it should be allowed since you've done it before, corporate said you could, you saw it done before at this location. It's like HUCA, keep coming back on different shifts and/or other stores.
As a n00b myself I walked you through my learned knowledge by reading through relevant topics and through trial and error. I hope I am not misleading you. I always say: I love learning from others mistakes, but in truth, yours will stick with you the best.
There's plenty of time, start slow and don't be afraid to get a little uncomfortable.
Hope this helped :-D