Rates are NOT applicable for Muslims

I was searching for a holiday package to Vietnam and Cambodia and found this link http://www.marimari.com/tour/vietnam/3d2n_hochiminh_cuchi.html which states Rates are NOT applicable for Muslims in their Terms and Conditions.

At first, I thought Muslims are not allowed to visit there. Apparently it is not the case. It appears that Muslims who want to eat the so-called “Halal Food” requires paying an additional charge than the quoted price. Now the question is does every one, who has a Muslim name in the group would want to pay that extra charge and eat “Halal Food?” By paying the extra charge, is there any guarantee that whatever meat product you eat would be slaughtered according to the Islamic teachings?  What are the chances of  being in a group where the majority is  Muslim travellers, to a destination that has a rich history linked to Buddhism? Over eighty percent of the population who are followers of Buddhism, and  a tour itinerary promising to a number of sites that has temples and  Pagoda’s among other historical places dated back as far as 11th or 12th century?

Personally speaking, I feel the adventure of travel experience would get spoil, if you have restrictions and a tendency to demand for the same things that you would have in normal circumstances. When and if you travel, just being flexible and opting to compromise would make it more adventurous. Fish, seafood and lots of vegetables stir fries along with fruits, juice and sweets sounds quite interesting choices, instead of preferring to opt for the “Halal Meal”  or rather a meal with meat. I would rather prefer to add little extra and go to a spa instead, than demand to get a “properly” slaughtered piece of meat to fulfill my hunger.