When I'm planning a vacation I will make a column for each "style" of trip and rows for categories such as hotel, transportation to/from Orlando, rental car, gas in Orlando, food, etc plus I have an "other" category for notes. Then I just compare the totals (objective) and the personal value of each style (subjective) and decide what to do. So for instance, I might have one column of "5nts-OnSite-Driving" and in that column I will have a 0 for rental car but my hotel amount would probably be high. Then other columns might say "7nts-OffSite-Flying" or "5nts-OffSite-Driving" etc and so on. I might find that staying offsite for 7 days costs the same as 5 days onsite. Or I'll decide to pay extra to fly because I don't want to spend 2 days in the car, even though it's cheaper.
Does that help?