I just submitted a paper to a conference. The reviewers gave me their responses only two days before the deadline to resubmit the paper. They seemed to indicate that my paper was on topic, and had good preliminary results, but they seemed to indicate that it was lacking more results. I understand it, and I think they're probably right, but I really don't have the time to invest much more time into this particular paper. My advisor thinks that I should invest my time in other research endeavors, but I don't really want to abandon a paper that i've already invested a lot of time in.
What should you do when you want to salvage a paper but don't have time to correct it?
One piece of advice-I-would-not-follow is to submit the paper to a lower quality conference. This could really be a waste of time if the conference is of very low quality, and if you are really proud of the work, do not do this. In the end, this may even look like a black spot on your CV.
What are you doing this weekend? Maybe canceling those plans and using the time to obtain the additional results. Then improve the paper based on the reviewer comments (evenings and other weekends) and resubmit to the next suitable venue.
Another alternative is to get help, either from a colleague or maybe even an undergraduate, if it is easy enough to the him/her how to run your experiments. Reward them with co-authorship, even if they haven't written a word of the paper. (This won't hurt you any.)
Ultimately, you cannot get something for nothing.