Who should organise the wedding feast (waleemah)?
Question

                Who has to organise the wedding party and waleemah? Is it the family of the groom or the family of the bride?.
Praise be to Allah.
      The basic principle with regard to the wedding feast 
      (waleemah) is that it should be organized by the husband, because he is 
      the one who is enjoined to do that, as it was narrated by al-Bukhaari 
      (5155) and Muslim (1427) that the Prophet (blessings and peace of Allah be 
      upon him) said to ‘Abd al-Rahmaan ibn ‘Awf: “May Allah bless you. Give a 
      waleemah even if it is with just one sheep.” 

    Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) said: It 
    (the waleemah) is prescribed for the husband, because the Prophet (blessings 
    and peace of Allah be upon him) said to ‘Abd al-Rahmaan ibn ‘Awf (may Allah 
    be pleased with him): “Give a waleemah,” and he did not tell his in-laws to 
    do that. And because the blessing is greater for the husband than for the 
    wife, because he is the one who sought the woman; it is very rare for the 
    woman to seek the man. End quote from al-Sharh al-Mumti’, 12/321. 

    And he (may Allah have mercy on him) said: The questioner’s 
    stating that responding to an invitation to a wedding feast is obligatory 
    does not apply in all cases; rather that refers to the wedding feast that is 
    offered by the husband. Accepting an invitation to this feast is obligatory. 
    Similarly, if it is organised jointly between the husband and the woman's 
    family, accepting the invitation to it is obligatory, because the husband is 
    the one who is enjoined to provide the wedding feast, because the Prophet 
    (blessings and peace of Allah be upon him) said to ‘Abd al-Rahmaan ibn ‘Awf: 
    “Give a wedding feast, even if it is with one sheep.” If the wedding feast 
    is provided by the wife's family only, and the husband is going to offer 
    another feast when his wife comes to join him, it is not obligatory to 
    accept the invitation of the wife's family; rather accepting it is Sunnah.

    End quote from Fataawa Noor ‘ala al-Darb. 

    From this we may note that it is permissible for the wedding 
    feast to be organised jointly between the husband and wife, or the wife's 
    family may organise it. Similarly, the wedding expenses may be shared as 
    agreed between the two parties, and each of them may offer a wedding feast, 
    as is customary in some countries. If there is some dispute as to who is 
    obliged to provide the wedding feast, it is to be provided by the husband, 
    as stated above. But other wedding expenses, such as having a party in a 
    hotel and so on, should be done according to mutual agreement. 

    And Allah knows best.