I'm a 4th year student applying to EM this cycle. Can anyone comment on how valuable going to ACEP 2019 is for a student applying to EM?
If I recall correctly, they do have a residency fair, where residents from different programs are there to talk about their residency. May be useful in getting information, but you could easily obtain a lot of that online and on this forum. Other than that, not terribly useful (or cost effective) for you guys.
Please don't waste your money as a MS4. Are you applying to every program in the country? If not, then I'd use the money you were planning on investing for ACEP and spend it on applying to a few more programs to maximize your interview offers. You'll get MUCH more bang for your buck that way.
The best time to attend ACEP in the grand scheme of things is your last year of residency during the job hunt. You can knock out a lot of interviews at ACEP. I met a couple of groups I was interested in at ACEP during my 4th year and interviewed that evening with one and the next afternoon with another.