Oh, come on. I don't mind that the wish for finding 2,000 or 3,000 simoleons worth of relics shows up on the last day of vacation. Even the 5,000 simoleons works out if the merchant has a decent supply. But 10,000 simoleons worth in less than a day. I don't think I can do that. It will be a while before they head back to Egypt. The couples exploring China and France will be travelling first. This vast HP wish will be sitting there taking up a slot for ages. ;)
Update: I actually did it. I had two sims stop the adventures they were working on, plus the two who were wandering about collecting stuff. No 'Dangerous Creatures' or 'Gold Figurines' were collected but lots of 'Canopic Jars' and 3 'Dropa Stones' helped me get there. All those HP will help buy some 'Food Replicators' for home.