I read somewhere upthread that you don’t need to have sufficient A.M. to waitlist - or has this changed?

I was planning to waitlist for some flight the other day and I don’t have enough AM, but the screen didn’t allow me to proceed saying that “you don’t have sufficient miles”. But I surely don’t want to transfer my credit card points to AM unless I’m sure that the waitlist clears - a bit of chicken and egg situation.

Is there any way around this?