Yes, however since the first and last letter appear to be different symbols (unlike MRM, but like TER) and it seems to be the only three letter marking on the electrical panel for that station. So since TERs are a conformed capability for that station, and require an electrical connection from this panel, it is most likely that the text says TER instead of MRM.
Yes, however the markings would be there if it was integrated with the F-2, similar to those for the TER and ASM. The only reason not to include MRM markings would be if there is no MRM capability.
We know it can’t just be due to these MRMs not being a service loadout, since the ASMs aren’t either and their markings are still present.
Though this, combined with the blurred text above makes me wonder if there might be GBU-38 capability there. Though at least from the blurred images it seems far more likely to be Japanese text, possibly also related to the fuel tanks in some way.