Basically DJY (Du Jiang Yan) .. or sichuan in general is low exposure to the sun, the locals even say that out of the 365 days in a calendar year, 300 days you will not see the sun. Stock up on your cup noodles if you have a strong taste bud to certain taste(s). Their spiciness.. not all Singaporeans (or even the local Chinese) can take it.
Du Jiang Yan itself has a very very vintage/classic place with a river ( i kinda forgot the name, but am sure the host will bring you there for sure). Night photography there is the best.
Try not to bring too much equipment (camera).. eh.. attract attention (lah).
I went there last year, wanted to catch the eclipse with the locals. but okie (lah), in the end we spotted a five-minute finale of the entire episode.
I've been there to provide similar service as your project. Maybe we can PM each other to share experiences and all.