I ran a campaign based on this previously. I found that it is just adventuring in the world of rather than translating the adventures to RM. D&D adventures are vastly different than RM and therefore you will have to dismantle the adventures, remove a lot of the HP attrition encounters, decide what critters/threats are appropriate and make sense.
The campaigned worked nicely ran the slaver series, Saltmarsh, Elemental Evil and began the Demon Web series, though Giants does not translate at all the way one would need. Beware, you will only be running the idea of the adventures rather than direct translations - due to systems being so different and some of the continuity needed to make things make sense is not necessarily there after the many years.