Luang Prabang's litter problem

This cultural gem has experienced a tourist boom in the last ten years. Like many other third world countries, the infrastructure cannot keep up with the growth tourism.

A scenic spot, but look below...

View of the Mekong, with pile of plastic bottles and assorted rubbish - Dry Season

It is the public areas (like the roadside rubbish above) that is the problem. Individual hotels, guest houses and restaurants keep their individual areas clean, it's in their interest to have attractive surroundings for their customers.
You can also see the same cascade of litter along the riverbank on the Nam Khan (River). With the wet season, this mountain of rubbish will be swept into the river and downstream to join the rubbish in Vientiane and even farther afield (through Thailand, Cambodia to the delta in southern Vietnam).

When tourism helps the environment - Keep Bali Clean

Nusa Dua Beach, Bali, Indonesia

Every morning workers from beachfront hotels, restaurants and bars rake and collect rubbish (predominantly plastic bottles, wrappers) dropped or swept ashore. The beaches of Kuta and Legian are noticeably cleaner than this time last year. The Keep Bali Clean initiative (started in 2014) seems to be definitely working.

Laneways and main streets have organised stacks of refuse, ready for collection. Less dog droppings also this year.

The rubbish problem in Paradise - South Lombok, Kuta Bay

Locals dropping rubbish (plastic bottles, wrappers, plastic bags) is a worldwide problem. I know I speaking as a cashed up Westerner, lucky enough to visit these beautiful places, but they won't stay beautiful. Snorkelling in this bay, plastic bags and wrappers outnumber the pretty fish.
The idea of taking your litter home with you in places of scenic beauty isn't the done thing.

  

This is a popular spot for the locals. The Novotel Lombok is in the background (its grounds are litter free, but the other side of the fence - a dumping ground).

This is a closeup of the last photo.