My son uses a mini for 3D scanning (connected to a 100K Leica scanner) and also to steer a drone scanning and heat differentials in buildings. But he has two of them, due to their lack of protection. He cannot cover the screen because the touch control is necessary.
He hates them. But the software he uses is restricted to iPad.
He has switched the rest of his business to Google OS phones and watches, and now runs Windows software or uses off site number crunching (done in India or the USA, but India is much much cheaper).
He absolutely hates Apple and he calls me a devoted Apple fanatic. His base work PC computer was cheap, and has a 4090 GPU, he reckons Workstations are a bad rip off that only big companies buy, and they buy lots of them at huge discounts, and there is no value in workstations he claims. He does raise his eyebrows about my 5,1 Mac Pro that he knows is still operating. Although its past even Opencore's survival date, as all Intels will be soon. No Mac Pro for me now as Apple has dropped that upgrade concept. Their business model is based on iPhones.
His wife (my daughter in law) had a coffee spill on her macbook too. It cost a lot to marginally repair. She had it repaired by a 3rd party. Apple said buy a new one as their repair price was close to its replacement cost. Another case of Apple's business intent. She is a scientist, and has now switched to PC notebooks. I give her my old Apple watches, so she still has an iPhone to operate her watch. But due to Apple planned obsolescence strategy, I am myself considering switching to Windows. But the Apple system is difficult to escape from.
iPads are not even dust proof. iPhones used to also be open to dust and moisture as well, but now they have some proofing. But not the iPad, at all.
Why?
Apple doesn't want to make anything proofed except for phones and watches, because Apple wants to blame the customer for them failing, and Apple awaits such failures as part of their business plan. If Google had not come along, and Apple was the only smart phone provider with internet access etc. (compared to the competition at the time Apple introduced the iPhone) then even now, Apple's phones would not be protected. My evidence is the iPad. It should be protected.
Every contemporary iPhone user should be thanking Google OS and Samsung etc for making proofed smart phones that forced Apple to proof iPhones as well.
Apple makes money from not protecting its iPads and computers. Business notebooks have not only better typing action keyboards, but they are spill proof keyboards (and can take a cup of tea or coffee or water) spilled on them and hence are far more customer focused. Apple could easily make a better keyboard for their notebooks, and have them spill proof. And also have proofed iPads. They choose not to, despite the very high cost of an iPad Pro.
I have an ocean racing yacht, and I can see my display information via the boats network, which also includes WiFi. The ocean is wet and so are waves, wind and rain carry salt water spray all over the race boat. Green water can also hit anywhere on the boat's exterior. Moisture is everywhere on a sail boat. I can use my iPhone Pro Max, no problems, but not an iPad. If the iPad was IP68, it would be useable, I'd have bought a few M4 matt Pros, as their displays doesn't reflect, although their battery life is hopeless for a boat that sails for days on end. I expected the new M4 Pro to be proofed, because Samsungs are. But no, I was annoyed that Apple follows its "planned to fail" philosophy. Such iPads M4 anti reflection units could have been terrific. Cheaper than a $4,500 B&G display too.
Instead I have bought Google Samsung pad versions, which are IP 68, and they also run the B&G software. Tell your wife about them, they are far more suitable for field work.
You can put your heads in the sand, but don't put your iPad near moisture or dust, because they are deliberately designed not to take it.