Which tablet to choose if I would like to make a surprise partner on vacation?

I am asking you a question here. In a few days he plans to go with his partner, so far as contraception we used only condoms, which can be a nuisance, and on the trip I would like to make him a surprise and buy a tablet once after to forgive himself condoms. However, I have some doubts about the choice of a particular tablet, the trip will last 3 days and can I take a chance with an escapelle tablet with action up to 74h or is it better to stock up to buy ellaone? During the trip I will be on the 16th, 17th and 18th day of the cycle. I hesitate because I wonder if it is necessary to invest in a more expensive tablet since the risk of mishaps is a tad smaller, but I care that it was effective, yours. :)