Audio problem: After the RV rolls into the lake, Jamie asks, "What meeting?" then Bob answers, "The Alpine merger," and in the next shot facing Jamie, Bob turns his head as he is still talking, though nothing is heard. (01:16:10)
Audio problem: After reaching Alpine via the Gornicke bus, when Bob says, "Some of my behavior on this trip might be misconstrued as an insult," Bob's mouth/jaw does not match most of his words. (01:25:10)
Audio problem: The Gornickes and Munro family pull out of the gas station in their bus-type vehicle while Bob is coming down the hill on the bike. There is a "ding ding" sound typical of full service gas stations or auto repair places. These require the long black wires to trigger when tires run over them but no wire is visible.
Answer: In the world of "make believe", they used "movie magic" to zap the RV out of the water and on to dry land - with no mechanical issues resulting from being submerged. In the real world, someone called a tow truck - perhaps AAA - and the RV was pulled out of the water and it suffered water damage and needed some repairs. This movie was presented as being "real life." Bob left on a bicycle to "try to find help." Near the end of the movie, Carl said that the RV "spent two days under water and they had to fish it out." He didn't say who "they" were. A fishing pole would not be strong enough to reel in a large RV, so I think it is safe to conclude that a tow truck was used to pull the RV out of the lake.
KeyZOid
It should be noted that "fish it out" is a common phrase to mean pull or take out, especially after searching. When people use the term, they're never taking about using a fishing pole. But often when people post questions like this, they're asking for an in-film explanation in case they missed (or didn't understand) something. If no in-film explanation was given, a reasonable speculation can be given. You don't need to remind people the movie is a movie. If the in/film explanation is uncharacteristic to real life, then one can point out that in real life it wouldn't happen that way.
Bishop73
It was meant to be ironic.
KeyZOid
There was no irony, but this isn't the forum for irony anyways.
Bishop73
I guess I failed miserably... but wasn't the original question rhetorical?
KeyZOid