My trip home from Maui to Massachusetts took me to three airports and two car rental places. We flew Delta and rented from Hertz.
At the OGG airport in Maui, the tram from the car rental area to the terminal was not in use, so we had to walk. Check-in was also quite different from usual. There were a cadre of National Guard troops taking traveler's temperatures and questioning selected people (not us). At security, we were told NOT to take out computers and liquids and to use as few bins as possible.
On all our flights, Delta boarded first class passengers first and then anyone needing extra help or extra time. Then they boarded by seat row from the back of the plane first. This was so much more efficient than usual that I wish they'd always do that. The flight from LAX to ATL was overbooked by 5 people at Delta's 60% capacity level and they offered $500 to people to delay themselves for that. Middle seats were empty on all the flights.
Mask wearing was mandatory in Maui, and compliance near universal. At the other airports (LAX and ATL), at least 20% of the people sitting around or walking around - including workers like cleaners! - were not wearing masks. At the ATL airport, the announcements said only "Some airlines are requiring masks." While waiting around for the next flight, we changed seats often to avoid whole families or couples nearby who were not wearing masks.
At the Maui airport, no concession stands were open. In LAX, only Starbucks and Jersey Mike's were open for food at our terminal.
On our first flight, we received a little packet of Purell sanitizer on boarding the plane, and no food or drink at all for the five-hour flight. On each of the LAX-ATL and ATL-BDL flights we received a ZIplock bag with bottled water and two small snacks. The pilots did not come out of the cockpit to say good bye as they usually do when we got off each of the planes, but the flight attendants were there.
As for car renting, both of our rentals were from Hertz. In Maui, they asked me to prove that I had been in Hawaii for more than 14 days. I was not expecting that question, but luckily I was able to dig out my flight documents from January. When I asked why I hadn't been warned in advance about this requirement, the worker told me, "The governor changes the rules day by day," which is true.
In Connecticut there were big signs about if you came from such and such a state (about 7 of them), you would have to quarantine for 14 days, but the rental clerk did not ask where we came from, and it didn't seem like there was any mechanism for enforcing this.
At both car rental places, in Maui and in Connecticut, Hertz put a "we sanitized your car" seal across the outside of the driver's door, which made me feel comfortable breaking the seal and getting in without dousing the whole car interior in sanitizer.
All in all, I had been dreading this as a dangerous trip, but it felt not so bad. We'll know in about a week if we made it through without getting infected with the virus!
[Added later for the judgmental commenters] This was not a pleasure trip. We had been in Hawaii when the Coronavirus shutdown hit and decided it would be safer there than back East, which was the correct decision. We are not flying or even driving anywhere for pleasure these days, and I did not post this to encourage anyone to fly for a pleasure trip.