I have a similar problem. a JAR PPL but no Class 2 medical due to a minor cardio issue. However UK CAA are happy to let me use my PPL on the basis of a medical declaration from my GP (per NPPL) as long as I fly to NPPL rules (no complex, no IMC, no night etc.)
As that isn't ICAO compliant it is UK only and my FAA "on the basis of" is no use either.
However, I simply fly with an instructor in the USA when I am on vacation and have just had a highly enjoyable trip flying all round Colorado and in San Diego. It gives me somebody that knows the area and proceedures, which makes my trips far less pressurised, a like minded soul to pass the flight with and as I am not hour building I don't give a toss about having P1 hours (although some of the US hours are still lohgged as P1/S).
It may not work for you, but it does for me.