I would think that replacing cabinets and countertops is not an alteration unless you're adding an island, or adding electrical outlets, or adding in a dishwasher where there is not one now. 

more area, more uhaul movement in comparison to say, rhode island.   

As you can see in the aerial view below, Las Vegas is a small island of private land surrounded by a vast expanse of federal land; 90% of Clark County and 85% of the entire state of Nevada is federally owned.Most of the remaining undeveloped land is situated on the metro area's outskirts and is less desirable.

I would also invest in some duplex's/Multi-Family, but believe SFR is the way to go; especially in Long Island, NYAny thoughts?

How is the Long Island market?

Lots of possibilities, but the best use will be shown in the market for the area....what is land being used for adjacent to this piece and in the vacinity.

However, we do get a few stays that are 3-5 days and those are usually guests that are visiting multiple islands.  

I’m aware of a lot of new development planned for these areas as my primary job is land brokerage.

The two small open cabinets on the island were built by a previous student of my fathers as practice for a cabinet making event he was attending.

I think he only covers Long Island NY.