55+ Senior Vs. All Age MH Parks

[JC K.]

Please share your thoughts on the pros/cons of senior MHPs?  I've come across a few MHPs that in my opinion did not offer any special amenities to cater to seniors.   

Why would a park owner want a senior only MHP?  Are senior MHPs better kept?  Is there less turnover?  Are rents higher/lower? Can an investor easily change a senior MHP to an all age park or vice versa?