The question then becomes, in an area that is highly dependent on service workers for a successful tourism trade, etc., where are those workers supposed to live, and how far can they reasonably be expected to drive and pay for transportation while still being able to have enough for their living expenses? 

His family in Vietnam will be helping him with rent. 

Just depends.I was able to get a zoning variance to put a small campground on a property once, in WA, because the county wanted to increase tourism and needed more camping spots.  

I had a 2 acre parcel in Wa many years ago, and got a variance for a small campground on just 2 acres, because the county wanted more campgrounds for tourism.

I have properties in NC, SC and one in NYC the one i would like to bring up is in SC I bought a fourplex all rented leases in place BUT all four leases were cheep the apartments all looks like Vietnam going through the DMZ bombing raid. so I sent all 4 tenants a 30 day notice that they are to move within 5 days after each lease has ended we rehabbed the entire building as each one left pulled the carpet and got started. we have now finished half the building invested about $30k and re-rented the two finished apt's each went up by $250 a month plus pet dep and extra rent for the pets. and this took all the RIF RAF out and even got a thank you note from the local police and the mayors office for what we did. now in saying all this SC is VERY, VERY Landlord Friendly no rent by the 5th pay $40 bucks for first notice to pay or remove no rent still they have 10 days to pay or leave after that 14 days later the sheriff;s office removes the tenant and retake possession.

I did 2 weeks in Vietnam in 2013.

. $140m in improvements to the speedway and surrounding infrastructure, $100m+ in RE projects both permanent (condos) and tourism (hotels) already committed with broken ground, BUT - unlimited expansion westward.

https://www.airdna.co/blog/global-vacation-rental-bookings-skyrocket-by-127-after-surge-in-domestic-tourism?

I live in a small town that has very little tourism. 

Especially without major tourism infrastructure that I’m aware of.4.