Sabah pijamayla dolaşmayı seviyorum, ama misafir gelince hemen terliklerimi giyiyorum.

In Turkish, many time words can be used without any case ending as adverbs.

So sabah by itself can mean in the morning.

This is very common with words like:

• bugün = today
• yarın = tomorrow
• akşam = in the evening / evening
• sabah = in the morning / morning

So Sabah pijamayla dolaşmayı seviyorum naturally means I like walking around in pajamas in the morning.

Turkish usually treats pijama as a singular noun meaning the whole pajama outfit.

So:

• pijama = pajamas / pajama outfit
• pijamayla = in pajamas / with pajamas on

This is one of those places where Turkish and English package the idea differently. English often uses a plural-looking word, but Turkish normally does not.

-yla / -yle is a joined form of ile, which usually means with.

So:

• pijama ile
• pijamayla

These both mean basically the same thing, but the attached form is very common in everyday Turkish.

Here it does not mean with pajamas in the sense of carrying them. It means wearing pajamas or in pajamas.

The y appears because pijama ends in a vowel, and Turkish uses a buffer consonant there:

• pijama + ile → pijamayla

After sevmek when you say you like doing an action, Turkish usually uses a verbal noun form, not the dictionary infinitive.

So:

• dolaşmak = to walk around / to wander around
• dolaşma = walking around, wandering around
• dolaşmayı = the action of walking around, as a specific object of the verb

In other words, Turkish treats the action as the thing you like.

So:

• dolaşmayı seviyorum = I like walking around

The final -yı / -yi / -yu / -yü is the accusative marker, because the action is the direct object of sevmek.

Because sevmek takes an object, and here the object is the action of walking around.

Breakdown:

• dolaşma = walking around
• dolaşmayı = walking around + accusative

So literally, it is something like:

• I like the walking around

This is very normal Turkish structure. You will see the same pattern in sentences like:

• Yüzmeyi seviyorum = I like swimming
• Kitap okumayı seviyorum = I like reading books

Because Turkish verbs already show the subject.

• seviyorum = I like
• giyiyorum = I put on / wear

The ending -um / -yorum tells you the subject is I, so ben is usually omitted unless you want emphasis or contrast.

For example:

• Ben seviyorum, o sevmiyor. = I like it, but he/she doesn’t.

In your sentence, there is no need to say ben.

Because Turkish -(i)yor does not only mean right now at this exact moment. It is also often used for:

• current habits
• typical behavior
• what someone generally does

So here:

• seviyorum = I like
• giyiyorum = I put on / I wear

The speaker is describing normal behavior, and -(i)yor sounds very natural.

You could also sometimes see the aorist in similar contexts, but -(i)yor is extremely common in everyday Turkish for this kind of personal habit.

Gelince comes from gelmek and means:

• when ... comes
• once ... comes
• as soon as ... comes

So:

• misafir gelince = when a guest comes / when guests come / when company comes

This -ince / -ınca form is a very common way to make a when clause in Turkish.

More examples:

• Eve gelince beni ara. = Call me when you get home.
• Onu görünce sevindim. = I was happy when I saw him/her.

Because Turkish often uses a bare singular noun in a general sense, especially when the exact number is not important.

So misafir gelince can mean:

• when a guest comes
• when guests come
• when company comes

It is more about the situation of having visitors, not necessarily about counting them.

If you say misafirler gelince, that clearly emphasizes plural guests. But misafir gelince is very natural and idiomatic.

Terliklerimi has several parts:

• terlik = slipper
• -ler = plural
• -im = my
• -i = accusative

So:

• terliklerim = my slippers
• terliklerimi = my slippers, as the definite direct object

The accusative is needed because the speaker is talking about a specific thing: my slippers.

In Turkish, a definite/specific direct object usually takes the accusative.

And possessed nouns like my slippers are naturally specific.

So:

• terliklerim = my slippers
• terliklerimi giyiyorum = I put on my slippers

Without the accusative, the phrase would sound incomplete or ungrammatical in this context.

In Turkish, giymek can cover both ideas depending on context:

• to wear
• to put on

In this sentence, because of hemen and misafir gelince, the meaning is clearly I put on my slippers right away.

So context tells you it is the action of putting them on, not just the state of already wearing them.

Not exactly. Dolaşmak often means:

• to wander around
• to walk around
• to hang around
• to move around casually

In this sentence, it gives a relaxed, informal feeling: the speaker likes being around the house in pajamas, casually moving around in them.

So dolaşmak is broader and more casual than just plain walk.

Hemen means immediately / right away, and Turkish adverbs are fairly flexible in position.

Here, putting hemen before the object and verb sounds very natural:

• hemen terliklerimi giyiyorum

It emphasizes the immediacy of the action: as soon as guests come, I quickly put on my slippers.

Turkish word order is flexible, but this version is smooth and idiomatic.