Sheikh Sa`ûd al-Funaysân, former professor at al-Imâm University
A husband and wife going for a vacation after marriage is permissible and there is absolutely nothing wrong in it.
It does not matter whether its date and duration are preplanned or not.
It is of no consequence if one refers to it as a “honeymoon”.
Though we are ordered to be different from the unbelievers in their particular faith-based qualities that distinguish them in their faith from others, this is not something specific and distinctive for them.
Moreover, the Prophet (peace be upon him) said: “Works are but by their intentions” [Sahîh al-Bukhârî and Sahîh Muslim]
In any event, the couple are obliged during their vacation to abide by all Islamic teachings and etiquettes. They are obligated to avoid suspicious places and to refrain from all wrongdoing. They should recognize that Allah watches them and knows what they are doing.
It is worth saying that the couple have the right to benefit from the permissible concessions of travel, such as combining and shortening their prayers, breaking their fasts if it is Ramadan, and wiping on their socks for wudu’ for a longer duration, and the like.
And Allah knows best.
Source: Islam Today