Upstate NYer, Congratulations on your April '17 retire date! I am in a somewhat similar situation; I took a severance from my company in April 2016, then took a 20 hour per week job with a trade association in Washington, D.C. I am able to work from my home in Pittsburgh.
What I have found, though, is that I really want to be fully retired. Our (married) household has the financial means to do so... but I was attitudinally unprepared last April to actually pull the plug and retire. And ironically, shortly after I took the 20 hour/week job, my hiring manager left and I was put in charge of her 4 other direct reports, which was not in the cards when I was hired. Long story short - I am fully retiring at the end of April '17 also. I am working with the organization for a smooth transition.
Two risks to retirement come to mind - investment risk, that is, loss of principal; and inflation risk - the erosion of earning power over time. One dear relative of mine, caught by inflation, had to return to work at age 80 to make ends meet. To counter the risks, I am now looking more closely at asset allocation and have calculated that we should have money to age 92, if we can retain a 2.5% annual return or better. We are working to do that! And, we will be able to live comfortably, following the 4% annual withdrawal rule. My DH is adapting to the idea of my being fully retired, and he will FIRE at age 58 in two years.
Best of luck to you in your journey! It sounds like you have been putting things in order for a long time. And best to you with the NYS park pass! We bought a travel trailer (a used Casita fiberglass 17 footer for the initiated), and have already spent 40 nights in it in the 7 months of ownership. I am so eager to spend more times at parks of the USA with DH. I have already had a chance with the trailer to engage in 'carpentourism' and visiting family for extended vacations, as MMM describes. Perhaps our paths will cross in the NYS parks. Look for a 17 foot fiberglass trailer and a grey haired guy (or two),
With warmest regards, David.