"3.3 days"? I'm guessing you meant 3.3 years. :smileywink:
I did the SWDI virtual. You get a RAP-2, join a GoTo meeting where the instructor teaches the course. You also have access to a lab environment to do the labs. The lab environment, IIRC, has two controllers, two AP-125, and two laptops (all per student). They did a great job with the interface. You have console access to the AP and controllers, remote power control, ethernet port control, etc. I believe the new 6.1 SWDI also covers the S3500 switch. I took the course last year when the course was 6.0, but the ACMP test was still 5.0.
I highly recommend the course!