In the Large charter airline famous for rather cramped seat pitch that I have worked for the following rule applies for ALL exit rows and therefore most extra legroom seats - which is why tend to get all our seating issues See below**
No Children
No Obese passengers
No Disabled Pax
No Persons of Reduced Mobility - i.e. invalid/injured
No Infants
No Elderly
Plus at the O/W no lose items at floor level in the exit row and the rows immediatly in front and aft of the row. I personally add the "no shoes - off" to all pax at these locations and in fact I 'suggest' it to all the pax in my cabin secure zones However I must point out that is is not part of the officially taught Cabin Secure/ O/W exit secure procedures. What they call a "nice to know"
** due to the config. of our aircraft any larger persons who want extra legroom or generally more sace are able to purchase a seat with the extra space. These are usually located at an exit row - and though I'm not certain - our sales departments do not ask the persons measurments. So when a clearly obese passenger sits down is his/her 'paid for' seat we (the crew) have to discreetly move the pax to another seat for T/o and LNDG. this task might seem straight forward but most of our aircraft are FULL (being a charter carrier) and it is both embarrsing for the Pax and disconcerting for the other PAX.
I beleive all such pax who request those seats should fit within certain Wiast, Torso measurment restrictions like they do on rollercoastsers.
a long moan I know......... but on one flight we had to LEAVE a passenger behind because he wouldn't fit in the seats allocated. I must have moved such pax several times in only a few months and is so frustrating to both PAX and Crew and such situations can seriously jeapordise the safety of aircraft.