I did the 3 day camping tour of Yosemite in June. Yosemite itself is stunning, and purely because of that I had a fabulous time. But the actual tour experience doesn't live up to the destination.
First, the guide (I think his name was Matt from memory) was over 45 mins late to the pickup. The company stresses beforehand that guests MUST be at pickup point early, so most of us were waiting an hour on the footpath by the time he showed. No contact from the company advising of the delay, and when we called the office no-one answered. When he did show, the excuse was 'traffic'. Pretty poor I felt - when you tell your guests they must be early, your guide must ensure he allows for traffic and reaches pickup on time. In the case of a true exception, the company should contact guests so they're not standing around wondering what's happening.
Second, The guide was really more just a driver. Example - Usually at the start of this sort of tour the guide would get everyone in the van, then introduce himself, crack a joke and get everyone to introduce themselves in a way that breaks the ice. Not difficult. There was none of that on this tour - guide just said 'we're off to Yosemite, first stop in 2 hours' and started driving. Of course, the group gradually managed to get a good atmosphere going, but things tend to be more stilted without that first facilitated intro. This was the theme throughout - the guide drove us around safely, but seemed disinterested. He had never hiked any of the paths he recommended/took us on and therefore often the answer to a question was 'I don't know'. On the last day, we followed the guide coming back from our 'high country' walk - we got lost with snow on the path, and ended up bushwacking and breaking through snowcrusts everywhere. In the end we had to cross a creek to reach the van and did so over a snow bridge above a rocky section, which felt rather unsafe given all the snow that had collapsed under us to that time! The rest of the group had been waiting an hour for us and were quite worried. Now, I know that not every guide will have experience of every path, but this guide's general attitude and overall lack of local knowledge was disappointing.
Third issue - the equipment. Once we set up our tent we found it to have multiple holes (I'm talking big enough to stick 2 fingers through). Thankfully there was a spare and that one was ok. However, the sleeping pads also must have had holes and so they leaked air and were flat within 30 minutes or so. I tried 3 different ones and ended up stacking them up in an effort to achieve some sort of padding - none of the 3 held the air. When I mentioned it to the guide the response was 'yeah lots are leaking but no one's been marking them, so I dont know which ones are good'. Didn't get much sleep as a result.
The campsite itself is outside the national park, which I personally didn't mind - you have to drive or shuttle to various trailheads anyway, so it makes little difference. Just be aware it's pretty basic setup. The showers are little shed-type things and get boiling hot in the sun, so time your shower accordingly if you dont want to come out more sweaty than you went in!
The food was a positive, good variety for lunches and self-made meals and the place we ate out had lots of options. Most tours dont give you the 3 days so that was a definite plus. Highly recommend the mist trail. The van was comfy enough and the guide drive safely (although word of warning, take a motion sickness tab if you're affected by that - the drive up gets very twisty and the AC has to be turned off in the van as it's a steep climb).
I'm aware this may read as a bit of a 'rant', but I'm really not an unreasonable person. I did a similar camping tour with a different company the week before and absolutely loved it. This tour could be just as great with functional equipment and enthusiastic, knowledgeable guides.