@Dave Re: How many times?
So, I get 6 down votes for saying the tech is neat and its a good start, but questioning how many times could it be reused ???
To your point, yes sitting on top of a rocket is still a risky endeavor. I get that and while I'd do it, my wife would kill me for even thinking about it.
However my point was that even if they could constantly land it... we have a strengths and materials problem where components will eventually fail after so many uses.
How could they test this? I mean, depending on the payload, even insured, there's going to be a cost for Space X and that has to be balanced out against the manufacturing costs and the savings from reuse.
That's not rocket science but strictly bean counting and risk assessment. One would have to have a bunch of these being reused, and even after examining them for stress fractures and failures... extrapolate their life and then divide by 2 for a safety factor. (e.g. if its safe to use up to 10 times, limit its reuse to 5 and then melt it for scrap...)
You bring up another issue.
While I don't know you... but you do realize that you could get the shot in the arm or anywhere. Most likely the flight attendant will be male so if you want to pull your shorts off and get a long needle in the buttox... who am I to judge? ;-)
Personally, I'd skip breakfast and travel on an empty stomach.