Yes it matters, unless you are within the e5 window...
Originally Posted by
pnoeric
Searched for this but couldn't find the answer. Simple question: I can use 500 mi certs and get waitlisted for an upgrade... or I can pay 15k miles and get waitlisted for the same upgrade... does it matter? Will one or the other help my chances?
15k can clear anytime, e500s only within the window.