From the RCIA book approved for the USA:
"562. Pastoral considerations may suggest that along with the celebration of the sacraments of Christian initiation the Easter Vigil should include the rite of reception of already baptized Christians into the full communion of the Catholic Church. …
- The decision to combine the two celebrations at the Easter Vigil must be guided by the provision in the Rite of Reception, Introduction (no. 475.2). The decision should, then, be consistent in the actual situation with respect for ecumenical values and be guided by attentiveness both to local conditions and to personal and family preferences. The person to be received should always be consulted about the form of reception (see no. 475.2)."
This 475.2 has: “Any appearance of triumphalism should be carefully avoided and the manner of celebrating this Mass should be decided beforehand and with a view to the particular circumstances. Both the ecumenical implications and the bond between the candidate and the parish community should be considered. Often it will be preferable to celebrate the Mass with only a few relatives and friends. …”.
(From The Rites Volume One, Liturgical Press, 1990, ISBN: 0-8146-6015-0.)