There is no difference in the jumping of PDF elements between the first page and the others.Example here with a page break on the first page:

In general, we will allow a page break in the middle of the description of a service, be it a hotel, a tour, a flight, etc.Example here:

Therefore, we avoid a page break in the middle of an image, service title, arrival and departure dates, additional service information, etc.Example here:

In the case of flights, for example, it is quite rare (although not impossible) to add extra notes, so we will rarely have a page break in the middle.Flight display most of the time:

Finally, manual page breaks will have preference over all others. A manual page break can be added before a service, so this service will always have the page break preceding it. If it is added after a service, we will always have a page break after that service.

Final note: In addition to manual page breaks, we can never predict page breaks with 100% certainty, because we never really know what the content of each element will be. We can only tell the file to be generated, that it should avoid (or encourage) page breaks between certain elements instead of others.