We did it in 2019 in Uganda. Small group of about 8 of us with guides and armed rangers.
You have a big of a briefing at the start with a LOT of other people, but when the groups split up, you don't see anyone again.
You have the option of paying a local sherpa to carry your rucksack sack or help you over streams. Pay one, they are a life saver on uneven ground
Be prepared for hiking through jungle environment with a guide sometimes hacking the path in front of you, wading through small streams, climbing over fallen tree trunks, wading through muddy patches. Its a challenge and I was running on empty but you can't explain the feeling when you see gorillas in the wild.
We hiked for an hour before we found the family, some groups hiked a lot longer.
You can only stay around them for an hour so they don't get over exposed to humans, and it goes in a flash, and only so many permits are issued so book as soon as you can.
If you have the option, book it, it is amazing and a once in a life time experience.