Node node/3495145392 has the odd combination of features. The tool stand tag is for things like http://guides.obviously.com/Public-Bicycle-Work-and-Repair-Stands-2/1925

Is this a bike repair shop, or a do it yourself tool station?

Mapped as "ammenity_2", the bicycle tool stand here won't show on any bicycle tool stand maps.

Could you confirm this is a bike tool stand as well, open to the public?

amenity_2 bicycle_repair_station

The tag "bicycle repair station" is reserved for 24/7 stands with tools. Is that what's here? What brand is the tool stand?

See the wiki for details.

Could you explain what "toilets:disposal=0.000000" means? This appears to be an error in node/2460320839 and others. Thanks.

For way/242496461 could you add the toilets:disposal tag in English (it reads 水洗
which I assume means this should be toilets:disposal=flush.

It's about the tag denotation=cluster.
That tag is deprecated (out of curiosity, what did you mean by adding that tag?)

FYI: Tag denotation=cluster is deprecated.

FYI: The tag denotation=cluster is deprecated http://taginfo.openstreetmap.org/tags/?key=denotation&value=cluster

What is this feature here? It looks like no main road and no water nearby.

"cusotmers" should be spelled "customers".

Euro-Relais Mini is not the name of the station, that's the brand name of the equipment. There are thousands of "Euro-Relais Mini" stations in Europe.

It's the difference between
brand=Chevron
name=Frank's Chevron Station

If everyone invents a new way to tag for the rendering, it makes it even harder for the rendering engines.

Euro-Relais Mini is a "brand=" not a the name of the facility.

The right answer is for the rendering to recognize all 800 sanitary dump stations, not a hack on this node.

There are some 800 others that are "not rendered" in the same way. It's better to fix the problem for the 800 rather than keep 1 node mapped differently.

"don't tag for the rendering" is often repeated, and for some good reasons.

How about instead pushing for proper rendering support. See the ticket here: https://github.com/gravitystorm/openstreetmap-carto/issues/1507

I will update node/3309711661 to the new tagging.

If the RV sewage holding tank station is private, then it needs a private access tag as well. We don't want it showing up on a list of nearby facilities.

I'm still unclear: is this a place I can drive my motorhome and empty my sewage holding tanks?

Also if there is a card system, then why not tag barrier=gate+access=private?

I remove the name tag, and the tag "user_defined_other sanitary_dump_station" from the dump station you mapped.

The access road to the dump station is marked as private: is the station also private?
Also could you remove the name tag, as only objects with a real name should have one?