If you have to use the French conditional tense , here are a few sentences:
A leur arrivée, nous devrions les accueillir
Puis nous devrions les accompagner dans leur logement
Ensuite, le jour suivant, je propose que nous fassions une grande fête de bienvenue
All the French verbs are in French conditional tense except "propose" (present tense)
At their arrival, we should welcome them
Then, we should come with them (accompany) to their home
Afterwards, the next day, I suggest we should do a big welcome party...
Hope I helped !!