I would like to know if there is such an app that allows my iPhone to act as a remote for my iPad ie if I'm recording something on my iPad I can use my iPhone to press record/play/pause/forward or rewind my iPad via my iPhone

I would like to know if there is such an app that allows my iPhone to act as a remote for my iPad ie if I'm recording something on my iPad I can use my iPhone to press record/play/pause/forward or rewind my iPad via my iPhone

As the King says, if your friends wifi router was relatively new, it likely has not been picked up by Apple's location based information database system and thus there is no location information associated with it.  So your iPad had no way of getting its location.
The wifi location databases are traditionally updated by wardriving - literally companies employ people to drive around sniffing out active wifi signals and associating an approximate location to it.  Some companies also have web sites to submit that information if owners wish to (Apple does not seem to have one though), and the various companies with wifi location databases buy and sell their information.  Bottom line is though, it can take weeks, months or sometimes even longer for a residential router to get picked up - depends on where you live (more rural, likely the longer time it takes).
When I moved from VA to NC it took up to 6 months for mine to reflect my new location (I checked it once the week I moved in, and then periodically thereafter, and it finally was getting it right after about 6 months) and I live in a pretty densley populated area (triangle NC).

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