I was recently selected for WOFT and am headed to Basic Training. Any other prior-enlisted 09Ws have to go to basic? What should I expect?

The Army used to require any prior service that did not complete Army or Marine Corp basic training to attend BTC, regardless of the length of the break in service. The good news for you is that this year they went to this format for prior service. 6 APR 17 *****Attention all Prior Service and Sister Service (Air Force, Navy, Coast Guard) applicants*****

Effective immediately, the Army is instituting a 6-week Prior Service Basic Combat Training Course (PSBCT) in lieu of the standard 12-week Basic Training Course (BCT) for prior service applicants with more than a 3-year break-in-service OR sister service applicants having completed Navy, Air Force or Coast Guard Basic Training (regardless of the length in break-in-service). Prior Service applicants with less than a 3-year break-in-service OR those who have graduated Army BCT, Marine Corps BCT, Navy/Air Force Special Operations Training or Air Force Security Police Training are NOT required to attend Army BCT or PSBCT. Learn More Here: Prior Service Basic Training Course

I would expect it to be more physically challenging that Navy Recruit Training, but you won't need to swim as well.