US Immigration from Philippines

My wife really wants her parents to come to the US on a B2 visa from the Philippines, so she found some local agencies there that claim to help people get their B2 visa with preparing them for the interview.

I already filled out all the paperwork and booked them OFC/Consulate appointments, but I'm skeptical if using an agency is even worth it at this point.

Few notes:

1. My father-in-law has one complication that in the 1980s, his employer filed his Taiwan immigration paperwork incorrectly and all of the workers got arrested sent back to the Philippines from Taiwan. Not sure if this is considered a deportation, since they never went in front of a judge and no further action was taken, but I noted/explained this situation in his DS-160 and I imagine he will get asked about it during the interview.
2. They don't have great financial means, which I know is always a challenge. I'm going to provide an invitation letter and confirmation of funding their trip, in case the interviewer wants evidence.
3. For ties to the Philippines, I was going to recommend them bring their land titles, picture of their house, motorcycle title, and evidence of taking care of our niece and my grandparents-in-law.
4. For visiting the US, I was going to tell them to talk about visiting my wife and I, but also suggest different touristy things we could do/

My wife s passport has expired and she s a legal green card holder. We never updated her passport from single to married when she got here. How do we update this in a simple way if there s a simple way dealing with immigration haha

Unconfirmed reports claim USCIS office employees coordinate with ICE on-site for arrests during routine immigration interviews.
This gets more attention following a recent series of apprehensions in San Diego during Green Card interviews.

A "leaked memo" details possible practices at interviews

We're hoping this week they FINALLY give us a case number and send the k1 petition to manilla already. I'm not sure why it takes 60 days (according to them) to do this but I'm also not sure why it took almost 9 months for uscis to do their job. jeez we would like at least this stuff to be done before the end of the year, see SOME progress. Been here since may with my fiance and this thing hasn't even left the usa left. It's always so crazy to me how the us gov expects people to just wait and keep their life on hold.