Hilton HHonors has several ongoing promotions that you can combine, but I wasn’t 100% sure if the Triple Your Trip is combinable with the Americas triple miles promotion. It is.
Hilton Hhonors often has an option on a promotion such as this Triple Your Trip to earn either double/triple points or miles. This time, however, the Triple Your Trip is only for points.
I just had a very inexpensive stay due the Hilton’s Best Rate Guarantee program at the Curio Collection Anselmo hotel (never going to stay there again) in Buenos Aires and the two promotions did stack:
Of course, had I had a stay at Conrad/Waldorf-Astoria hotels, I could have added couple of more combinable promotions.
I love the fact that Hilton HHonors allows you to combine number of promotions. You can always combine their main promo with airline specific one + often include various brand specific ones too. You can easily accelerate your points and miles earnings this way.