I was very tender for about three weeks and then I started a walking program for about an hour a day. Really, really slow for a while. The first couple weeks I couldn't get across the street before the light changed. By three months I started running again. At two months I was able to bike pretty hard, but biking stresses the groin very little. Basically the groin is really tight and as you increase exercise, particularly hip extension and low back extension you will be putting strain on the surgery site, breaking up tight scar tissue, and it results in soreness. That is why for the first 6 months I wasn't sure if it worked. Every time I did something new, or gained a tiny bit of range fo motion, I was sore the next day. I was constantly worried that I damaged the work of Dr. Meyers but it was invariably just soreness from breaking up scar tissue.
So if you have the same procedure as me (repair of floor and and release on one side)I would estimate several weeks before you can be back to work as a flight attendant and quite a while for the aerobics. All of it will involve soreness while increasing workload. It's a really hard call, though, because everyone's damage and surgery is unique. I took my time and didn't try to push it. I mostly followed his schedule but have heard of people going much faster and much slower. When I started running at exactly 3 months I began with 1/4 mile and increased up to three miles continuously over about a 6 weeks with calisthenics as prescribed by Meyers. All involved soreness.
But over time it'll get better. You need to accept that it'll be slow, and filled with doubt and soreness for spell. After two weeks there is no pain at rest but activity will bring soreness for a long time.
Sorry for rambling so much. I guess you need to consider the restricted ROM for the first few months and gauge how much ROM you need for your job. Talk to the good doc Meyers, he'll give you a much better idea based on the extent of your injury and the procedure he will do.
JPL, how long did it take before you were 100%? Also, was there a period of time where you were 80-90% and then plateaued(sp)for a few months?