I cannot tell my direct experience with my RV just yet, but I can tell you, (and confirmed from my own home experience) is penetration. I just got a 262 RB, so I will be toying with this in the future.
Wifi: It does not penetrate metal very well, so if you have a metal trailer you will get mixed results. You need to get the wifi - inside - that metal, and then it will work.
So. the concept...
1) a wireless bridge, or a wireless client.
Test case:
I have wifi at my home, it broadcasts all over the neighborhood., WCM3200, I have a metal building/barn for RV storage and apartment. In the apartment, kids complained no wifi, but putting USB dongle taped to window improved things, wife said only could get wifi if main door was open.
idea light...
2 Engenious bridges, 1 attached on house roof, the other LOS (line of sight) on metal building. Receiving end on metal building runs cat 6 - inside - metal building.
Hook to wireless router - inside - metal building
Result
Metal building - inside - lit up throughout interior with wifi. Plus, all my dhcp comes from my home side, the wireless router in the building is an old linksys, and it is set in bridge mode.
Now... caveats, that last bridge cuts the bandwidth in half (bridges by default come with some bandwidth overhead), but 25Mpbs let the kids do anything they wanted.
I live in country, no hardwired ethernet to home, been through several wireless ISPs finally got one that will perform as advertised. (there is more in my history - professionally dealing with wireless).
So, new 262 RB rear backup camera... issue... (don't have one yet, but want to do it right the first time) problem - I will bet that backup camera monitoring inside my Silvarado... won't work too well (any bets?) ---- but... but.. I have wifi in my truck!!!???
Truck is metal, exact same problem @2.4ghz (or 5ghz), the metal issue. Does anyone know if there is an ethernet port to connect some cat5/6 on the stock 2018 Silvarado, to run to my rear bumper area?
Further, just some industry insight, even though a campground may (or may not have repeaters), the same applies to their service to you the RV'er If you have 50 wifi campers on 100 mbps pipe, all actively using it, expect mixed results. RV campground need probably a 10gbps link (charter or comcast probably won't deliver this to them even at business rates).
ISPs 'oversell' bandwidth based on user 'regular' use. Through evolution (e.g. streaming), just speculating, but I would say, RV's that want to 'stream' are not 'regular users' any longer. (you are, but have evolved well beyond capacity in most cases)
I can fix this if I can wire to my rear bumper, and a pine64, not RV specific, but the entire concept applies to general RV use, since one is always mobile with and RV, and you will never know the quality the ISP should be delivering to you, they may advertise one thing, but in reality, deliver another. You are on their 'shared' pipe be it LTE/Gen5/ISP. They have to have bandwidth and facility to deliver. Wireless is convenient, hardwire is ALWAYS better.