The easiest way to find the grave is to install the What3Words app on your phone: https://what3words.com/products/what3words-app/
Once you have installed this you can use the app to navigate you to the grave using the 3-word address:
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Service
28th September 2021 at 2:15 pm
Cardiff Natural Burial Meadow
Coedarhydyglyn Park,
St Nicholas,
Cardiff
CF5 6SG
Get directions
Committal
6th October 2021 at 11:00 am
9C3RFP84+67QMR232
To find the grave use the What3Words app on your phone: https://what3words.com/products/what3words-app/
Use the app to navigate you to the grave using the 3-word address: ///tried.narrow.expect