I think RYR may be in for a rocky ride in the near future. Its true that the fall in the dollar has masked the rise in fuel prices to some degree but the fall/rise has not been equal.
The only reason people fly with RYR is the low fares and if they can't sustain these the pax will leave. Many airlines have a loyal customer base, I don't believe RYR do. As all the profits come from in flight sales and "extras" the fall in load factors will be very painfull.
The RYR experience is SO bad we may all look back in 10 years and ask how they survived so long.