I bought a bunch of Amex during the holidays (DL as well as AS, but both are handled by Cartera).

The larger purchases took nearly a month to post. Smaller orders ($2000 and less) posted in 4-5 days.

I also purchased a huge bunch during the 3x portal offerings of the past 10 days or so... of eight orders, only two have posted points already (a $1000 order and a $2000 order).

Be patient. But don't make travel plans dependent on these posting by 'xyz' date...