Verb conjugation of "subir" in Spanish

Once your kids grow every vacation that you take you need to consider the costs and the plan. For every age there is the appropriate type of travel, for instance it is insane to take a one year old to Disney Land.
I do translate to Spanish, but I always inform the client about my problem, in order not to have any dispute. The corrections I receive after proof reading are mostly a confusion between the different time forms in Spanish.
Actually, the East Coast is six hours behind CET, that means that I would speak on midnight at your 6 o'clock dinner. We should try written exercise first because of the huge time difference.